Remove g3itr actions from OSS rules_android

android_library and android_local_test currently call into [_add_g3itr](https://github.com/bazelbuild/rules_android/blob/4814684d5ed05b75ae5412791318e9bd4000b8e4/rules/resources.bzl#L178), which doesn't do anything (just copies input to output), but inflates the action count significantly. The g3itr action should not even be called for OSS rules_android, so it should be removed.