Revert "Proximity Wake-Up : adjust strings"

This reverts commit 726315540ff541c9655185279194c2cccedb3614.
Revert "Settings : Add preference for proximity wake"

This reverts commit 97fd8188282275ede50018bf020177b196b62832.

Conflicts:
	res/values/n5x_strings.xml

Change-Id: I27e90b3b0e77687d93cf29f1ea1d5d5f67b55aab