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:ede01c365e020152318649515ba748ca842ffb9f)
Merged-In: I375936345553cf2ba0ebc2982a75806387f21d1c
Change-Id: I375936345553cf2ba0ebc2982a75806387f21d1c
1 file changed