Remove PreferStylusOverTouchBlocker

To prevent crash on emulator, let's disable
PreferStylusOverTouchBlocker. A proper solution might require a re-work
of how it operates.

Test: atest inputflinger_tests
Bug: 222531989
Change-Id: I5481e6baf284be8f254b6caec45be0478f1fe4a7
(cherry picked from commit 2756839a)