[automerger skipped] Remove palette hooks. am: 4dd12b1f0c -s ours

am skip reason: Merged-In I49291b0685263e2655f51baf16704af101079e40 with SHA-1 ce6fbce71e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/libartpalette/+/14881277

Change-Id: Ib2c50e87f5c2f3ca3de2f40c988775bfa4ed7051