build: Remove angular_src nested workspace (#21096)

PR Close #21096

.circleci/config.yml

@@ -62,7 +62,7 @@ jobs:
       # Use bazel query so that we explicitly ask for all buildable targets to be built as well
       # This avoids waiting for a build command to finish before running the first test
       # See https://github.com/bazelbuild/bazel/issues/4257
-      - run: bazel query --output=label '//modules/... union //packages/... union //tools/... union @angular//...' | xargs bazel test --config=ci
+      - run: bazel query --output=label '//modules/... union //packages/... union //tools/...' | xargs bazel test --config=ci
 
       - save_cache:
           key: *cache_key