[automerger skipped] Revert "[DO NOT MERGE] Support non-host targets for ATF" am: cc5dc1e344 am: e175c29261 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/misc/+/14824581

Change-Id: Ibc13716a937cff3ae9709c7cb0cc0ec822d5d7df