Revert lockscreen transparency commits

Going to use SlimRoms method instead

Revert "Fix building."

This reverts commit ad74d6ef76993a8196383b30ed7081afc5115ebf.

Revert "Lockscreen : Use correct filter for background"

This reverts commit 2e3247b4f723d9e8c817ba9c12914ab9a8a9bfcd.

Revert "Lockscreen : Add custom background overlay"

This reverts commit bb173482d89c7ef7e6f1b33b435eaa22412a2c38.

Revert "framework: Custom lock screen background [1/2]"

This reverts commit 70a4b967867e0e261cc88e5145053fc937fa6809.

Revert "Lockscreen see through (1/2)"

This reverts commit 01cf460bad7d4bfa70df98b48e900f694835495d.