SystemUI: revert statusbar background

Revert "base: Make transparent QS background user configurable"

This reverts commit a082bf704db243112520f973068fee3cdd70aefd.

Revert "SystemUI: Allow hiding Black Gradient behind QSPanel"

This reverts commit 34e5a2e91d42441401e2918d6e324d137a951902.

Change-Id: I167188f69d2827cce873b08cfffd464f8d3dde65
2 files changed