Remove spurious comment

Author: hauntsaninja

mypy/semanal.py

@@ -411,7 +411,6 @@ def add_implicit_module_attrs(self, file_node: MypyFile) -> None:
                 node = sym.node
                 assert isinstance(node, TypeInfo)
                 typ = Instance(node, [self.str_type()])
-                # typ = self.named_type("__builtins__.list", [self.str_type()])
             else:
                 assert t is not None, 'type should be specified for {}'.format(name)
                 typ = UnboundType(t)