Remove workaround for unrotated gesture monitor (1/3)

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: I87d131016f403a9d06b1bd1ead542863af6cbe16