Revert "Add a stub rule for building APEX bundles." Revert "Add partial bp2build support for APEX targets." Revert submission 1733232-roboleaf-apex Reason for revert: b/192523357 Broken build 7512065 on aosp-master on sdk_x86_64-sdk Reverted Changes: Ie82c263f6:Add a stub rule for building APEX bundles. I93e2a25fa:Add partial bp2build support for APEX targets. Change-Id: I082e44435abe1dc6975a4fd020089c9c9cbc71ab