Revert "Enforce <uses-library> checks for android_app and android_app_import."

This reverts commit 22890c46.

Reason for revert: Broken build 7065627 on git_rvc-qpr-dev-plus-aosp
  on aosp_sunfish-userdebug branch.

Bug: 176892941
Test: treehugger
Change-Id: I0f5da13644fd2ec7b0472fe82918e3c6a72d953c