[main] Fix obvious mistake in WeakSet.processQueue

src/main/java/io/gitlab/jfronny/commons/ref/WeakSet.java

@@ -82,7 +82,7 @@ public class WeakSet<E> extends AbstractSet<E> {
         Reference<? extends E> wv;
 
         while ((wv = this.queue.poll()) != null) {
-            super.remove(wv);
+            delegate.remove(wv);
         }
     }