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: I21bf82c80c0390971405659d4b5b55e5c216050e