Remove persist.bootanim.color property definitions

These now belong to the platform policy.

Bug: 321088135
Test: build
Ignore-AOSP-First: sync policy internally first.
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:d4754d0b33988718c9b53c053af73acfae4eb0ac)
Merged-In: I085f9c2d42b384838e0a2a8136ee907f5e9bedae
Change-Id: I085f9c2d42b384838e0a2a8136ee907f5e9bedae
1 file changed