Revert "overlay: set UI mode to television for test"

This reverts commit 0f7352cd7a350318b2233599c35f401af7272c4a.
Revert "hwc: Add variable for hwc building"

This reverts commit 48f96e76d9a3031a4e130e31875aa6a80054b1d8.
Revert "BoardConfig: Add condition for hwcomposer wrapper use"

This reverts commit f67dbbccccdbab679b29109e2f2d9e887106c04b.
Overlay: Remove Trebuchet variables

Signed-off-by: zombah <zombah@gmail.com>
overlay: SystemUI enable HSPA icon and remove tablet interface var as it is default now

Signed-off-by: zombah <zombah@gmail.com>
overlay: Cleanup

* Remove some unknown vars
* Add couple from grouper overlay

Signed-off-by: zombah <zombah@gmail.com>