Revert "Settings: Hardware key custom rebinding (2/2)"

This reverts commit c88514982147299251a078d319a8b2d45a1d5424.
Settings: Option to control cursor in text fields using volume keys (2/2)

Change-Id: Ief85422daf24f43155e2f289951c922607305557

Conflicts:
	res/values/arrays.xml
	res/values/strings.xml
	src/com/android/settings/inputmethod/InputMethodAndLanguageSettings.java