Remove zipalign_tests from TEST_MAPPING it already runs as unit_tests am: 4d069ad2b8

Original change: https://android-review.googlesource.com/c/platform/system/libziparchive/+/1564655

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3fc67def3d3b8d9f5af8659d9dd67b422e7b25ae