java: reduce scope, make some interfaces private

found by UCDetector

Change-Id: I4e1051c041e62b8317b10a5d7d990c77b1acddf9

wizards/com/sun/star/wizards/common/UCB.java

@@ -240,7 +240,7 @@ public class UCB
           XContentProvider.class,ucb).queryContent(id);
     }
 
-    public static interface Verifier
+    private static interface Verifier
     {
 
         public boolean verify(Object object);

wizards/com/sun/star/wizards/ui/ImageList.java

@@ -789,7 +789,7 @@ public class ImageList implements XItemEventBroadcaster, ListDataListener
                 };
     }
 
-    public static interface IImageRenderer extends IRenderer
+    private static interface IImageRenderer extends IRenderer
     {
 
         /**

wizards/com/sun/star/wizards/ui/event/ListModelBinder.java

@@ -134,7 +134,7 @@ public class ListModelBinder implements ListDataListener
         remove((short) lde.getIndex0(), (short) lde.getIndex1());
     }
 
-    public static interface Renderer
+    private static interface Renderer
     {
 
         public String render(Object item);