Fix the function name removeFocusListener.

The function name seems to be removeFocusListener, rather than
removeLocusIdListener.

Bug: 202740657
Test: None
Change-Id: I23ad296251a99833e1d4b39e3b6316ee9367ff77

libs/WindowManager/Shell/src/com/android/wm/shell/ShellTaskOrganizer.java

@@ -421,7 +421,7 @@ public class ShellTaskOrganizer extends TaskOrganizer implements
     /**
      * Removes listener.
      */
-    public void removeLocusIdListener(FocusListener listener) {
+    public void removeFocusListener(FocusListener listener) {
         synchronized (mLock) {
             mFocusListeners.remove(listener);
         }