Remove onClockVisibilityChanged callback from KUMCallback

This callback is never invoked except once while the callback is
being registered.

Bug: 238187419
Test: atest KeyguardUpdateMonitorTest passes
Test: atest KeyguardViewMediatorTest passes
Change-Id: Ib349ea061728860cc43782db21df03d8e698e363

packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java

@@ -3347,7 +3347,6 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener, Dumpab
         callback.onTimeChanged();
         callback.onPhoneStateChanged(mPhoneState);
         callback.onRefreshCarrierInfo();
-        callback.onClockVisibilityChanged();
         callback.onKeyguardVisibilityChangedRaw(mKeyguardIsVisible);
         callback.onTelephonyCapable(mTelephonyCapable);
 

packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitorCallback.java

@@ -110,12 +110,6 @@ public class KeyguardUpdateMonitorCallback {
      */
     public void onKeyguardDismissAnimationFinished() { }
 
-    /**
-     * Called when visibility of lockscreen clock changes, such as when
-     * obscured by a widget.
-     */
-    public void onClockVisibilityChanged() { }
-
     /**
      * Called when the device becomes provisioned
      */

packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java

@@ -555,11 +555,6 @@ public class KeyguardViewMediator extends CoreStartable implements Dumpable,
             }
         }
 
-        @Override
-        public void onClockVisibilityChanged() {
-            adjustStatusBarLocked();
-        }
-
         @Override
         public void onDeviceProvisioned() {
             sendUserPresentBroadcast();
@@ -1193,6 +1188,7 @@ public class KeyguardViewMediator extends CoreStartable implements Dumpable,
             mSystemReady = true;
             doKeyguardLocked(null);
             mUpdateMonitor.registerCallback(mUpdateCallback);
+            adjustStatusBarLocked();
             mDreamOverlayStateController.addCallback(mDreamOverlayStateCallback);
         }
         // Most services aren't available until the system reaches the ready state, so we