Remove app preference from ANGLE logic

* Since we no longer plan to allow apps to specify a preference,
  remove the JNI plumbing.
* Also remove any uses and helpers sending it to ANGLE.

Bug: 80239516
Test: Manual build, ensure rules are followed
Test: cts-tradefed run singleCommand cts -m CtsAngleIntegrationHostTestCases
Change-Id: I080203fe9dc7d4935341aae8bfdb5e5e143e46cd