More framework tests cleanup.

Move all tests for android.* classes from tests/AndroidTests and
tests/CoreTests into framework/base/<core|graphics>/tests.

Consolidate all tests for java.* classes to tests/CoreTests.
Eventually hopefully these will be moved to dalvik/ somewhere.

Remove tests/AndroidTests entirely.

Change-Id: I86584d086ab7bd045bb38a10b699907805298a95