Add some comments and delete some commented out code

etor/src/main/java/gov/hhs/cdc/trustedintermediary/etor/metadata/partner/PartnerMetadataOrchestrator.java

@@ -32,7 +32,6 @@ public class PartnerMetadataOrchestrator {
 
     @Inject PartnerMetadataStorage partnerMetadataStorage;
     @Inject MessageLinkStorage messageLinkStorage;
-    //    @Inject RSEndpointClient rsclient;
     @Inject Formatter formatter;
     @Inject Logger logger;
 

etor/src/main/java/gov/hhs/cdc/trustedintermediary/external/reportstream/ReportStreamSenderHelper.java

@@ -18,7 +18,6 @@
 public class ReportStreamSenderHelper {
     private static final ReportStreamSenderHelper INSTANCE = new ReportStreamSenderHelper();
 
-    //    @Inject RSEndpointClient rsclient;
     @Inject Formatter formatter;
     @Inject Logger logger;
     @Inject MetricMetadata metadata;

shared/src/main/java/gov/hhs/cdc/trustedintermediary/context/ApplicationContext.java

@@ -53,6 +53,10 @@ public static void registerForThread(Class<?> clazz, Object implementation) {
 
         THREAD_OBJECT_MAP.set(threadObjectMap);
 
+        // The implementation may never have had anything injected into it
+        // (e.g. it wasn't part of the bootstrapping implementations registered into the
+        // ApplicationContext),
+        // so inject into the implementation now.
         injectIntoNonSingleton(implementation);
     }