Disable device aware permission tests on A15

VDM tests don't work on A15 + mainline without ag/31410712

Also cleaning up the flags launched in A15.

Bug: 402857630
Test: atest
Flag: EXEMPT test improvement
LOW_COVERAGE_REASON=TEST_ONLY
Relnote: n/a
Change-Id: I1768abc83d362817a8c2fc581d2ba9ff73c7e7e9
1 file changed