Revert "Lockscreen transparency, blur and rotation"

This reverts commit 6fa77d965ec0482868899eae45491d0b0245fcfa.

Conflicts:
	core/java/android/provider/Settings.java
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
	packages/Keyguard/src/com/android/keyguard/KeyguardViewMediator.java
	policy/src/com/android/internal/policy/impl/keyguard/KeyguardServiceWrapper.java

Change-Id: If57cc6b4b2e4f0143de63188c088ddd8edc3f89f