Revert "Add overlay option for Settings.System.ACCELEROMETER_ROTATION_ANGLES"

The default of 11 (90, 270 and 360 degrees) is perfectly fine.
Thus, this overlay is pretty useless.

Only 1 device currently uses this (and not due to any major issue),
so we aren't losing anything by removing this overlay.

This reverts commit 936c4bfa.

Change-Id: I7eb81d00af1672638689daddd1e78c7e12b21c4d