[automerger skipped] Remove palette hooks. am: 4dd12b1f0c -s ours am: 61c5c8e8f5 -s ours am: 3c602f17cf -s ours

am skip reason: Merged-In I49291b0685263e2655f51baf16704af101079e40 with SHA-1 4dd12b1f0c is already in history

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

Change-Id: I88d52064fe22649c801166e3e7a70e43f21fe2b3