Remove dataLazied from the removed elements

This is so that they're not detected as duplicates if they're reattached to the DOM in the future.

Author: msaggiorato

src/jquery.lazyloadxt.js

@@ -227,6 +227,7 @@
             }
 
             if (removeNode) {
+                $data(el, dataLazied, 0);
                 elements.splice(i--, 1);
                 length--;
             }
@@ -309,4 +310,4 @@
         }
     });
 
-})(window.jQuery || window.Zepto || window.$, window, document);
+})(window.jQuery || window.Zepto || window.$, window, document);