Revert "Added android.software.device_admin feature."

This reverts commit e157812629b6e48a6c1620322fcbd62605780fef.

Bug: 189246976
Bug: 178412797
Test: adb shell pm list features | grep device_admin || echo NOT_FOUND

Change-Id: I68083666a37ef1d349d6be864939c9817443acc2
1 file changed