Hygiene: Address wgMFMode FIXME

No longer needed. Cache is long cleared

Change-Id: I3c2b7103782e79c8325719f60649cf7453a3bb5c
(cherry picked from commit f8fba1b027941cd47a8ae141cf4d9593d4bb4f60)
Merge "Hygiene: Address wgMFMode FIXME"