Remove redundant hwaccelerated enabling.

Hardware acceleration is enabled on the application level in the
manifest. This cleanup-only CL removes redundant calls to enable
hardware acceleration on the level of activity, window, or view.

Test: Ran systemUI jank tests checking for lack of jankiness.

Change-Id: I37a9b687be3aaf95f9ba497e99cabd5f8c73ace1
11 files changed