Remove crostool migration tools

The migration to .bzl configured toolchains happened a long time ago and the conversion tools from proto files are not needed anymore.

This also cleans up rules_cc dependencies to build those tools. And unblock me around the import of py_proto_library, which is not needed anymore.

PiperOrigin-RevId: 683582749
Change-Id: I9a56d9e3f9089f7434708a2cfefdd4f12d186658

.bazelci/presubmit.yml

@@ -16,7 +16,6 @@ x_defaults:
     - "//examples/my_c_archive:all"
     - "//examples/my_c_compile:all"
     - "//examples/write_cc_toolchain_cpu:all"
-    - "//tools/migration:all"
     - "//tests/..."
     test_flags:
     - "--test_timeout=120"
@@ -29,7 +28,6 @@ x_defaults:
     - "//examples/my_c_archive:all"
     - "//examples/my_c_compile:all"
     - "//examples/write_cc_toolchain_cpu:all"
-    - "//tools/migration:all"
     - "//tests/..."
 
 buildifier:

WORKSPACE

@@ -11,34 +11,6 @@ http_archive(
     ],
 )
 
-http_archive(
-    name = "com_google_googletest",
-    sha256 = "81964fe578e9bd7c94dfdb09c8e4d6e6759e19967e397dbea48d1c10e45d0df2",
-    strip_prefix = "googletest-release-1.12.1",
-    urls = [
-        "https://mirror.bazel.build/github.com/google/googletest/archive/refs/tags/release-1.12.1.tar.gz",
-        "https://github.com/google/googletest/archive/refs/tags/release-1.12.1.tar.gz",
-    ],
-)
-
-http_archive(
-    name = "io_abseil_py",
-    sha256 = "0fb3a4916a157eb48124ef309231cecdfdd96ff54adf1660b39c0d4a9790a2c0",
-    strip_prefix = "abseil-py-1.4.0",
-    urls = [
-        "https://github.com/abseil/abseil-py/archive/refs/tags/v1.4.0.tar.gz",
-    ],
-)
-
-http_archive(
-    name = "io_bazel_rules_go",
-    sha256 = "91585017debb61982f7054c9688857a2ad1fd823fc3f9cb05048b0025c47d023",
-    urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.42.0/rules_go-v0.42.0.zip",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.42.0/rules_go-v0.42.0.zip",
-    ],
-)
-
 http_archive(
     name = "platforms",
     sha256 = "218efe8ee736d26a3572663b374a253c012b716d8af0c07e842e82f238a0a7ee",
@@ -48,49 +20,10 @@ http_archive(
     ],
 )
 
-http_archive(
-    name = "py_mock",
-    patch_cmds = [
-        "mkdir -p py/mock",
-        "mv mock.py py/mock/__init__.py",
-        """echo 'licenses(["notice"])' > BUILD""",
-        "touch py/BUILD",
-        """echo 'py_library(name = "mock", srcs = ["__init__.py"], visibility = ["//visibility:public"],)' > py/mock/BUILD""",
-    ],
-    sha256 = "b839dd2d9c117c701430c149956918a423a9863b48b09c90e30a6013e7d2f44f",
-    strip_prefix = "mock-1.0.1",
-    urls = [
-        "https://mirror.bazel.build/pypi.python.org/packages/source/m/mock/mock-1.0.1.tar.gz",
-        "https://pypi.python.org/packages/source/m/mock/mock-1.0.1.tar.gz",
-    ],
-)
-
-http_archive(
-    name = "rules_proto",
-    sha256 = "9a0503631679e9ab4e27d891ea60fee3e86a85654ea2048cae25516171dd260e",
-    strip_prefix = "rules_proto-e51f588e5932966ab9e63e0b0f6de6f740cf04c4",
-    urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/e51f588e5932966ab9e63e0b0f6de6f740cf04c4.tar.gz",
-        "https://github.com/bazelbuild/rules_proto/archive/e51f588e5932966ab9e63e0b0f6de6f740cf04c4.tar.gz",
-    ],
-)
-
 load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
 
 bazel_skylib_workspace()
 
-load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
-
-go_rules_dependencies()
-
-go_register_toolchains(version = "1.20.5")
-
-load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_proto_toolchains")
-
-rules_proto_dependencies()
-
-rules_proto_toolchains()
-
 http_archive(
     name = "rules_testing",
     sha256 = "02c62574631876a4e3b02a1820cb51167bb9cdcdea2381b2fa9d9b8b11c407c4",