Remove superfluous wake in dpmsinputeventfilter destruction

Workspace already makes sure to only dynamically delete the
dpmsinputeventfilter if all screens are currently on. This line to wake
all screens is therefore redundant.

It's problematic as it can cause a crash on final teardown when
workspace is destroyed.

BUG: 484861


(cherry picked from commit 3ed535dd)

14cd96a8 backends: Remove superfluous wake in dpmsinputeventfilter destruction