Revert "Refresh Notification Shelf layout when it becomes visible"

This reverts commit 73444553.

Reason for revert: b/368102426
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:0a9a1b9c50435c4235f08d28eec1f10fade0288f)
Merged-In: I1ae2ac8cd59fafad0d55fb3500438edfd03e9a1c
Change-Id: I1ae2ac8cd59fafad0d55fb3500438edfd03e9a1c