Revert "Add privileged to BROADCAST_CLOSE_SYSTEM_DIALOGS"

Revert "Add BROADCAST_CLOSE_SYSTEM_DIALOGS to launcher via privi..."

Revert "Udpate BROADCAST_SYSTEM_DIALOGS permission in CTS"

Revert submission 13328953-acsd-privileged

Reason for revert: DeviceBootTest#REBOOT_TEST fail on b/177952808.
Reverted Changes:
Id3fdaf36f:Udpate BROADCAST_SYSTEM_DIALOGS permission in CTS
I40a28210f:Add BROADCAST_CLOSE_SYSTEM_DIALOGS to launcher via...
If027c6824:Add privileged to BROADCAST_CLOSE_SYSTEM_DIALOGS

Change-Id: I2a2e12af9075727e0d6f0be07467c4ba9285b2d3