Removing flag com.android.systemui.shared.new_customization_picker_ui from trunk_staging.

This change was automatically created by rolling back a Gantry workflow.

Bug: 339081035
Change-Id: I8c08105f7d5ccfc141740a2397444c63563610e4
Flag: com.android.systemui.shared.new_customization_picker_ui
Ignore-AOSP-First: AConfig change for future AOSP release
1 file changed