Remove TEST_MAPPING file unit_test:true is sufficient unit_test:true all run in presubmit already which makes the TEST_MAPPING definition unrequired. (cherry picked from commit 393b17015ff3a9018cc7616333f70d9d6b2b6028) Test: presubmit Bug: 202488363 Bug: 175408655 Change-Id: I34a0e2e4a41e69548982cd17b9b3566580a72f51 Merged-In: I34a0e2e4a41e69548982cd17b9b3566580a72f51