Remove add_py_extra_pseudo_action and are_action_listeners_enabled usages

Upcoming Bazel changes will remove the following APIs:

* `py_internal.add_py_extra_pseudo_action`
* `py_internal.are_action_listeners_enabled`

These APIs are to support the legacy "extra actions" stuff in Bazel, which isn't supported externally and only had a few dangling cases within Google that
are being removed.

Bazel issue: https://github.com/bazelbuild/bazel/issues/16455