Move ArtGtestsTarget to general-tests.

The size limiting bug in tradefed has been fixed.
general-tests is more appropriate target since do
not do any device-specific testing.

Tag the ART tests so they can be run from ATP.

Bug: 147817606
Test: atest ArtGtestsTarget --rebuild-module-info -c
Change-Id: Idd5f65608a51a1b145e826c2056032acdfed9b6a
2 files changed