Remove persist.bootanim.color property definitions

These now belong to the platform policy.

Bug: 321088135
Test: build
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f75e76f91370231072cf8bb11621a9dfc12d4f08)
Merged-In: Ie7fcd37eeb176334e36a86d6ad3d66f42c1b841e
Change-Id: Ie7fcd37eeb176334e36a86d6ad3d66f42c1b841e
2 files changed