Revert "double tap to sleep available for devices without knock"

This was redundant with cm's version, which was in the correct place (statusbar options)

This reverts commit 50eb8f4724767d79f8500ddf53797ab475ad8048.

Conflicts:

	res/values/vanir_strings.xml

Change-Id: I28760ddfcf3cd434ab16d4ae16680597c67eb7e7