Move non-flaky tests into presubmit in TEST_MAPPING

Bug: 142866491
Test: atest --test-mapping frameworks/av/media/libstagefright:presubmit
Test: atest --test-mapping frameworks/av/media/codec2:presubmit
Change-Id: I8a7e7fd8cfd270f55759a3ff187e7b8d05678edd
2 files changed