diff --git a/packages/devtools_app/lib/src/shared/diagnostics/inspector_service.dart b/packages/devtools_app/lib/src/shared/diagnostics/inspector_service.dart
index c92f525937d..47a8f34d8d1 100644
--- a/packages/devtools_app/lib/src/shared/diagnostics/inspector_service.dart
+++ b/packages/devtools_app/lib/src/shared/diagnostics/inspector_service.dart
@@ -203,10 +203,6 @@ class InspectorService extends InspectorServiceBase {
 
   final ValueNotifier<List<String>> _rootDirectories = ValueNotifier([]);
 
-  @visibleForTesting
-  Set<String> get rootPackages => _rootPackages;
-  late Set<String> _rootPackages;
-
   @visibleForTesting
   List<String> get rootPackagePrefixes => _rootPackagePrefixes;
   late List<String> _rootPackagePrefixes;
@@ -326,9 +322,8 @@ class InspectorService extends InspectorServiceBase {
     return false;
   }
 
-  Future<void> _onRootDirectoriesChanged(List<String> directories) async {
+  void _onRootDirectoriesChanged(List<String> directories) {
     _rootDirectories.value = directories;
-    _rootPackages = {};
     _rootPackagePrefixes = [];
     for (var directory in directories) {
       // TODO(jacobr): add an API to DDS to provide the actual mapping to and
@@ -356,68 +351,19 @@ class InspectorService extends InspectorServiceBase {
           packageParts = packageParts.sublist(2);
         }
         final google3PackageName = packageParts.join('.');
-        _rootPackages.add(google3PackageName);
         _rootPackagePrefixes.add('$google3PackageName.');
-      } else {
-        _rootPackages.add(path.last);
-      }
-    }
-
-    await _updateLocalClasses();
-  }
-
-  Future<void> _updateLocalClasses() {
-    return Future.value();
-    // TODO(https://github.com/flutter/devtools/issues/4393)
-    // localClasses.clear();
-    // if (_rootDirectories.value.isNotEmpty) {
-    //   final isolate = inspectorLibrary.isolate!;
-    //   for (var libraryRef in isolate.libraries!) {
-    //     if (isLocalUri(libraryRef.uri!)) {
-    //       try {
-    //         final Library library = await inspectorLibrary.service
-    //             .getObject(isolate.id!, libraryRef.id!) as Library;
-    //         for (var classRef in library.classes!) {
-    //           localClasses[classRef.name!] = classRef;
-    //         }
-    //       } catch (e) {
-    //         // Workaround until https://github.com/flutter/devtools/issues/3110
-    //         // is fixed.
-    //         assert(serviceManager.manager.connectedApp!.isDartWebAppNow!);
-    //       }
-    //     }
-    //   }
-    // }
-  }
-
-  @visibleForTesting
-  bool isLocalUri(String rawUri) {
-    final uri = Uri.parse(rawUri);
-    if (uri.scheme != 'file' && uri.scheme != 'dart') {
-      // package scheme or some other dart specific scheme.
-      final packageName = uri.pathSegments.first;
-      if (_rootPackages.contains(packageName)) return true;
-
-      // This attempts to gracefully handle the bazel package case.
-      return _rootPackagePrefixes
-          .any((prefix) => packageName.startsWith(prefix));
-    }
-    for (var root in _rootDirectories.value) {
-      if (root.endsWith(rawUri)) {
-        return true;
       }
     }
-    return false;
   }
 
   Future<void> addPubRootDirectories(List<String> rootDirectories) async {
     await _addPubRootDirectories(rootDirectories);
-    await _onRootDirectoriesChanged(rootDirectories);
+    _onRootDirectoriesChanged(rootDirectories);
   }
 
   Future<void> removePubRootDirectories(List<String> rootDirectories) async {
     await _removePubRootDirectories(rootDirectories);
-    await _onRootDirectoriesChanged(rootDirectories);
+    _onRootDirectoriesChanged(rootDirectories);
   }
 
   Future<void> _addPubRootDirectories(List<String> pubDirectories) {
diff --git a/packages/devtools_app/test/inspector/inspector_service_test.dart b/packages/devtools_app/test/inspector/inspector_service_test.dart
index 84b6b605aea..bf481d012e6 100644
--- a/packages/devtools_app/test/inspector/inspector_service_test.dart
+++ b/packages/devtools_app/test/inspector/inspector_service_test.dart
@@ -169,10 +169,6 @@ void main() {
                 ),
               );
 
-              expect(
-                inspectorServiceLocal.rootPackages.toList(),
-                equals(['flutter_app']),
-              );
               expect(
                 inspectorServiceLocal.rootPackagePrefixes.toList(),
                 isEmpty,
@@ -181,50 +177,10 @@ void main() {
               await inspectorServiceLocal.addPubRootDirectories(
                 ['/usr/jacobr/foo/lib', '/usr/jacobr/bar/lib/bla'],
               );
-              expect(
-                inspectorServiceLocal.rootPackages.toList(),
-                equals(['foo', 'bar']),
-              );
               expect(
                 inspectorServiceLocal.rootPackagePrefixes.toList(),
                 isEmpty,
               );
-
-              expect(
-                inspectorServiceLocal.isLocalUri('package:foo/src/bar.dart'),
-                isTrue,
-              );
-              expect(
-                inspectorServiceLocal
-                    .isLocalUri('package:foo.bla/src/bar.dart'),
-                isFalse,
-              );
-              expect(
-                inspectorServiceLocal.isLocalUri('package:foos/src/bar.dart'),
-                isFalse,
-              );
-              expect(
-                inspectorServiceLocal.isLocalUri('package:bar/src/bar.dart'),
-                isTrue,
-              );
-              expect(
-                inspectorServiceLocal.isLocalUri(
-                  'package:bar.core/src/bar.dart',
-                ),
-                isFalse,
-              );
-              expect(
-                inspectorServiceLocal.isLocalUri(
-                  'package:bar.core.bla/src/bar.dart',
-                ),
-                isFalse,
-              );
-              expect(
-                inspectorServiceLocal.isLocalUri(
-                  'package:bar.cores/src/bar.dart',
-                ),
-                isFalse,
-              );
             } finally {
               // Restore.
               await inspectorServiceLocal
@@ -250,10 +206,6 @@ void main() {
             await inspectorServiceLocal.addPubRootDirectories(
               ['/usr/me/clients/google3/foo/bar/baz/lib/src/bla'],
             );
-            expect(
-              inspectorServiceLocal.rootPackages.toList(),
-              equals(['foo.bar.baz']),
-            );
             expect(
               inspectorServiceLocal.rootPackagePrefixes.toList(),
               equals(['foo.bar.baz.']),
@@ -263,12 +215,6 @@ void main() {
               '/usr/me/clients/google3/foo/bar/baz/lib/src/bla',
               '/usr/me/clients/google3/foo/core/lib',
             ]);
-            expect(
-              inspectorServiceLocal.rootPackages.toList(),
-              equals(
-                ['foo.bar.baz', 'foo.core'],
-              ),
-            );
             expect(
               inspectorServiceLocal.rootPackagePrefixes.toList(),
               equals(
@@ -281,12 +227,6 @@ void main() {
               '/usr/me/clients/google3/foo/bar/baz',
               '/usr/me/clients/google3/foo/core/',
             ]);
-            expect(
-              inspectorServiceLocal.rootPackages.toList(),
-              equals(
-                ['foo.bar.baz', 'foo.core'],
-              ),
-            );
             expect(
               inspectorServiceLocal.rootPackagePrefixes.toList(),
               equals(
@@ -297,56 +237,15 @@ void main() {
               '/usr/me/clients/google3/third_party/dart/foo/lib/src/bla',
               '/usr/me/clients/google3/third_party/dart_src/bar/core/lib',
             ]);
-            expect(
-              inspectorServiceLocal.rootPackages.toList(),
-              equals(['foo', 'bar.core']),
-            );
             expect(
               inspectorServiceLocal.rootPackagePrefixes.toList(),
               equals(['foo.', 'bar.core.']),
             );
 
-            expect(
-              inspectorServiceLocal.isLocalUri('package:foo/src/bar.dart'),
-              isTrue,
-            );
-            // Package at subdirectory.
-            expect(
-              inspectorServiceLocal.isLocalUri('package:foo.bla/src/bar.dart'),
-              isTrue,
-            );
-            expect(
-              inspectorServiceLocal.isLocalUri('package:foos/src/bar.dart'),
-              isFalse,
-            );
-            expect(
-              inspectorServiceLocal.isLocalUri('package:bar/src/bar.dart'),
-              isFalse,
-            );
-            expect(
-              inspectorServiceLocal.isLocalUri('package:bar.core/src/bar.dart'),
-              isTrue,
-            );
-            // Package at subdirectory.
-            expect(
-              inspectorServiceLocal
-                  .isLocalUri('package:bar.core.bla/src/bar.dart'),
-              isTrue,
-            );
-            expect(
-              inspectorServiceLocal
-                  .isLocalUri('package:bar.cores/src/bar.dart'),
-              isFalse,
-            );
-
             await inspectorServiceLocal.addPubRootDirectories([
               '/usr/me/clients/google3/third_party/dart/foo',
               '/usr/me/clients/google3/third_party/dart_src/bar/core',
             ]);
-            expect(
-              inspectorServiceLocal.rootPackages.toList(),
-              equals(['foo', 'bar.core']),
-            );
             expect(
               inspectorServiceLocal.rootPackagePrefixes.toList(),
               equals(['foo.', 'bar.core.']),