Removed the common kernel, never used

Change-Id: Ib9f014767c1a6cbf3e2c0ac4410ef4758eb3a80a
props: debug.sf.hw is enough for hardware rendering

Change-Id: I11f1f620e65cab413ded66b0a86109f6481cbb52
Revert "overlay: keyguard security height resized for clocks"

This reverts commit e230bcc944f6781524b229862c9e7eae7ff28d99.

Change-Id: I2badb052d56168e597b65e450f6f4f62fc9d1501
Revert "overlay: adjust time setup layout for DeskClock"

This reverts commit 5ceebfb818e1be4f5dfdc6b4f4fc3dbfc3ac1d36.