Remove redundant modifiers from interfaces (#14843)

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

bundles/org.openhab.binding.insteon/src/main/java/org/openhab/binding/insteon/internal/driver/DriverListener.java

@@ -26,10 +26,10 @@ public interface DriverListener {
     /**
      * Notification that querying of the modems on all ports has successfully completed.
      */
-    public abstract void driverCompletelyInitialized();
+    void driverCompletelyInitialized();
 
     /**
      * Notification that the driver was disconnected
      */
-    public abstract void disconnected();
+    void disconnected();
 }

bundles/org.openhab.binding.insteon/src/main/java/org/openhab/binding/insteon/internal/message/MsgListener.java

@@ -27,5 +27,5 @@ public interface MsgListener {
      *
      * @param msg the message received
      */
-    public abstract void msg(Msg msg);
+    void msg(Msg msg);
 }