revert adding reverse

Author: bernt-matthias

lib/galaxy/tools/parameters/wrapped.py

@@ -64,9 +64,6 @@ def __contains__(self, key: object) -> bool:
             return True
         return key in self._legacy_mapping
 
-    def __reversed__(self):
-        return reversed(self.data)
-
 
 def copy_identifiers(source, destination):
     if isinstance(source, dict):