SystemUI: Clean up old H+ drawables causing issues on manta

These drawables seem to be adapted to fit the old combined
tablet status bar. They mistakenly gets used on manta with
an oversized H+ drawable as a result.

Change-Id: Iefc0e997e31508ea98f10e5b399ce6569a4a3a44
Merge "SystemUI: Clean up old H+ drawables causing issues on manta" into cm-10.1-staging