Remove redundant public modifier for interface members in MouseCursorPlugin.java (#175281)

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Author: AbdeMohlbi

engine/src/flutter/shell/platform/android/io/flutter/plugin/mouse/MouseCursorPlugin.java

@@ -121,14 +121,14 @@ public interface MouseCursorViewDelegate {
      * with the context associated with this view.
      */
     @NonNull
-    public PointerIcon getSystemPointerIcon(int type);
+    PointerIcon getSystemPointerIcon(int type);
 
     /**
      * Request the pointer to display the specified icon object.
      *
      * <p>If the delegate is implemented by a {@link android.view.View}, then this method is
      * automatically implemented by View.
      */
-    public void setPointerIcon(@NonNull PointerIcon icon);
+    void setPointerIcon(@NonNull PointerIcon icon);
   }
 }