Cleanup flag for notification memory dumps in bug reports

This cleans up the released flag which adds notification memory use to
bug dump reports. This flag has been released since QPR2 and no bugs were found within the code.

(statsd logging is still flag protected with a different flag)

Bug: 254512425
Change-Id: Ie2048f3d74f38dd689663f1641410932cfe7d92d
Test: Unit tests

packages/SystemUI/src/com/android/systemui/flags/Flags.kt

@@ -67,10 +67,6 @@ object Flags {
     // TODO(b/254512538): Tracking Bug
     val INSTANT_VOICE_REPLY = unreleasedFlag(111, "instant_voice_reply")
 
-    // TODO(b/254512425): Tracking Bug
-    val NOTIFICATION_MEMORY_MONITOR_ENABLED =
-        releasedFlag(112, "notification_memory_monitor_enabled")
-
     /**
      * This flag is server-controlled and should stay as [unreleasedFlag] since we never want to
      * enable it on release builds.

packages/SystemUI/src/com/android/systemui/statusbar/notification/init/NotificationsControllerImpl.kt

@@ -20,7 +20,6 @@ import android.service.notification.StatusBarNotification
 import com.android.systemui.ForegroundServiceNotificationListener
 import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.flags.FeatureFlags
-import com.android.systemui.flags.Flags
 import com.android.systemui.people.widget.PeopleSpaceWidgetManager
 import com.android.systemui.plugins.statusbar.NotificationSwipeActionHelper.SnoozeOption
 import com.android.systemui.statusbar.NotificationListener
@@ -117,9 +116,7 @@ class NotificationsControllerImpl @Inject constructor(
         notificationLogger.setUpWithContainer(listContainer)
         peopleSpaceWidgetManager.attach(notificationListener)
         fgsNotifListener.init()
-        if (featureFlags.isEnabled(Flags.NOTIFICATION_MEMORY_MONITOR_ENABLED)) {
-            memoryMonitor.get().init()
-        }
+        memoryMonitor.get().init()
     }
 
     // TODO: Convert all functions below this line into listeners instead of public methods