Revert "Gesture Lockscreen [1/2]"

This reverts commit 5f6d3e9a490b9c5e78e70a913f4a91f818274299.
Frameworks: Gesture Lockscreen (1/2)

This adds the ability to us a hand drawn gesture as
a means to unlock the device.

In the case that the gesture is forgotton or not
being recognized correctly, the fallback will be the
same as when using patterns.

Change-Id: I9820644d0a5752d62b8219e820e696c9157e949d
Signed-off-by: Arnav Gosain <nolinuxnoparty@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/widget/LockPatternUtils.java
	packages/Keyguard/res/values/strings.xml
	packages/Keyguard/src/com/android/keyguard/KeyguardHostView.java