Remove workaround for unrotated gesture monitor (2/3)

There is currently a conflation between per-window-input-rotation and
unrotated gesture monitors. We would like to enable
per-widnow-input-rotation first without affecting gesture monitors so
that the old behavior is maintained for gesture monitors.

We can then add unrotated gesture monitors as a new feature later on.

Bug: 201982032
Bug: 179274888
Test: manual
Change-Id: I721ef278a9e0d9287e67b28e953b4ec4c4aea4e3