Revert "Revert "instead of hiding the memory bar.. remove the view to use less resources""

This is not causing any issues. i've been using it in builds for months without problems or complaints.
my guess is you denied super user permissions needed to restart the UI or something.

This reverts commit 65652c51823df6afb4e108dfdbd0201c308e8eb4.

Change-Id: I93e1be99d545ca9a9e0e72038a383d90000a98fa