Revert "Fix flickers in numeric pad of time picker"
Revert "Fix flickers in numeric pad of time picker"

Bug: 7407383
Cannot reporoduce the problem described in the bug after reverting the workaround.
This reverts commit 3060c5130336909deebf61d6c025be6d62bb3f55

Change-Id: Ie3b7285dc712a105cda8d32088ed0cd42098be36

OrBin/SynClock-Android