Revert "Fix memory leak in SystemUI"

No instant refresh - yuck!
This reverts commit 3752f7ff9b7c2d36b175eb35ea5275f8045ca6d0.

Change-Id: Ibbe97b97bbb99cd358ee04d349a389db48f64f57
Merge "Revert "Fix memory leak in SystemUI"" into kitkat