Revert "[1/2] Allow hiding frequently contacted lists"

This reverts commit 290c10cb011dffa0d0ee264a4199e680c7cfcf39.

Change-Id: I7e65d3be0b837b9861d9ff94e7abe6d0ddb96531
Merge remote-tracking branch 'upstream/cm-10.2' into dark-jelly-cm-10.2