Enable serialization tests for bags.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1475955 13f79535-47bb-0310-9956-ffa450edef68

src/test/java/org/apache/commons/collections4/bag/AbstractBagTest.java

@@ -486,18 +486,6 @@ public abstract class AbstractBagTest<T> extends AbstractObjectTest {
         assertEquals("Bag should be same size", size, bag2.size());
     }
 
-    /**
-     * Skip the serialized cannonical tests for now.
-     *
-     * @return true
-     *
-     * TODO: store a new serialized object on the disk.
-     */
-    @Override
-    protected boolean skipSerializedCanonicalTests() {
-        return true;
-    }
-
     /**
      * Compare the current serialized form of the Bag
      * against the canonical version in SVN.