Clean up sysprop_test TEST_MAPPING am: 17874a69ee am: d1efe7b903 am: 042ac334e6 am: 482300d074

Original change: https://android-review.googlesource.com/c/platform/system/tools/sysprop/+/1564362

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9c22ece1d4d2861ebd38cf64ab160fc6b8f90fcd