Removing flag com.android.systemui.use_transitions_for_keyguard_occluded from RELEASE_CONFIG_TRUNKFOOD_STAGING.

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

Bug: 344716537
Change-Id: I57096cd9139887e91ab37bf6467ce74ac3572229
Flag: com.android.systemui.use_transitions_for_keyguard_occluded
Ignore-AOSP-First: AConfig change for future AOSP release