Migrate FLAKY options from modules to test suites.

Excluding "flakes" is now down directly in test-mapping.gcl rather than
per module.
Junit @Ignore is always ignored and doesn't need to specified.
For a few modules, we had two versions that had identical options other
than specifying Flaky.  I removed one and updated the affected
TEST_MAPPING files.

Test: atest -p apex/jobscheduler/service/java/com/android/server/usage:all
Test: atest -p services/accessibility:all
Test: atest -p services/core/java/com/android/server/logcat:all
Test-Mapping-Slo-Bypass-Bug: b/335015078

Change-Id: I63e7f9e1f466dd60b0b11c4d06340037c27cb489