Remove flag view_set_requested_frame_rate_mrr

Already soaked in staging and the flag is incorrectly not marked with
metadata bugfix.

Bug: 352206100
Test: atest libsurfaceflinger_unittest
Flag: EXEMPT_bugfix

Change-Id: Icb79bcddedb115ce6b65d7ef7deb3c31bddfda21
4 files changed