def storage_del(self, key=None):
if not self._module:<EOL><INDENT>return<EOL><DEDENT>self._storage_init()<EOL>module_name = self._module.module_full_name<EOL>return self._storage.storage_del(module_name, key=key)<EOL>
Remove the value stored with the key from storage.
If key is not supplied then all values for the module are removed.