Really don't need multi

Author: jamadden

src/relstorage/adapters/mysql/drivers/mysqlconnector.py

@@ -204,7 +204,7 @@ def callproc_multi_result(self, cursor, proc, args=(), exit_critical_phase=False
         if exit_critical_phase:
             self.exit_critical_phase(cursor.connection, cursor)
 
-        cursor.execute("CALL " + proc, args, multi=True)
+        cursor.execute("CALL " + proc, args)
         multi_results = [cursor.fetchall()]
         while cursor.nextset():
             try: