Remove zipalign_tests from TEST_MAPPING it already runs as unit_tests am: 4d069ad2b8 am: a5ba9fb624 am: b42b9b5d38 am: fbb15ce943

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Iedf42b84eb3372a4a9a918b5bc21709e9891c7cc