Remove redundant modifiers from interfaces (#14843)

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.meteostick/src/main/java/org/openhab/binding/meteostick/internal/handler/MeteostickEventListener.java

@@ -24,5 +24,5 @@ public interface MeteostickEventListener {
      *
      * @param data a line of data from the meteoStick
      */
-    public void onDataReceived(String data[]);
+    void onDataReceived(String data[]);
 }