Remove deprecated Forwarded.getForwardedPacket()

This method was deprecated with 1cd268a8f ("Deprecate
Forwarded.getForwardedPacket()").

smack-extensions/src/main/java/org/jivesoftware/smackx/forward/packet/Forwarded.java

@@ -83,17 +83,6 @@ public class Forwarded implements ExtensionElement {
         return xml;
     }
 
-    /**
-     * get the stanza forwarded by this stanza.
-     *
-     * @return the {@link Stanza} instance (typically a message) that was forwarded.
-     * @deprecated use @{link {@link #getForwardedStanza()}} instead.
-     */
-    @Deprecated
-    public Stanza getForwardedPacket() {
-        return forwardedPacket;
-    }
-
     /**
      * Get the forwarded Stanza found in this extension.
      *