Revert "hlte: enable userspace vibration strength control (2/2)"

* Use existing common class in hardware/samsung/cmhw instead.

This reverts commit 524bd3cd4e9738a4d91047522771acd7f9a39c8f.

Change-Id: Ie777e3b88f4b4e49be42b9e1b51f1e29b943c04c