Revert "Port CM LockScreen (1/2)"

This reverts commit 5a306d3c9b9a7b906df5fcc0c93e6a7cf39dbfe1.
Port Slim Custom Lockscreen Background (1/2)

Change-Id: I627d6225473e730003cc43fff2d44eb97395aaf5
Revert "Fix Transparency Value not sticked with autohide"

This reverts commit 58c9e6ef75c088fdea6a4b7d6e8d2c9b4b93c9e9.