Remove redundant parentheses

jedi/api/classes.py

@@ -555,7 +555,7 @@ class Definition(BaseDefinition):
         .. todo:: Add full path. This function is should return a
             `module.class.function` path.
         """
-        position = '' if self.in_builtin_module else '@%s' % (self.line)
+        position = '' if self.in_builtin_module else '@%s' % self.line
         return "%s:%s%s" % (self.module_name, self.description, position)
 
     @memoize_method