Revert "Port "Option to control cursor in text fields using volume keys (1/2)""

This reverts commit 8175bfaf72e14e2d1989d2299c5bca06d8555ee0.

Change-Id: I93706cc2bf518285651be21b4e27580393bfb804
Framework: Volume key cursor control (1/2)

This feature is moved to framework so it also works with third
party keyboards.

Change-Id: I821b6ed34a39a959d54c27b26785cf6baaddc8ca