[3.1.0] Move $safe from ElementDef to HTMLModule

- Make $info in AttrTypes protected, to force cloning
- Remove copy() functions in favor of clone

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1664 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/URI.php

@@ -105,12 +105,5 @@ class HTMLPurifier_URI
         return $result;
     }
     
-    /**
-     * Returns a copy of the URI object
-     */
-    public function copy() {
-        return unserialize(serialize($this));
-    }
-    
 }