AOSP/Calendar - Fix closing of system dialogs broadcast without permission.

Deleted closeNotificationShade method thus not invoking ACTION_CLOSE_SYSTEM_DIALOGS intent.

Making same changes as java from https://googleplex-android-review.git.corp.google.com/c/platform/packages/apps/Calendar/+/15845189

Test: are done in ag/15845189 and on aosp-master

Bug: 190403923
Bug: 201673759
Change-Id: I39bc668a5671cce94372063246c13bc09dd569fa
(cherry picked from commit 21ea50b26386b3a68db5fef6f8d2519db596debf)
1 file changed