Revert "Add double tap sleep feature to secure lockscreen"

This reverts commit f2d192148c999b955928f4e44389de51d92787ea.
Merge branch 'staging' of https://github.com/ValidusAOSP/frameworks_base into staging

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardSelectorView.java