disable clang-tidy modernize-trailing-return (pytorch#37888)

Summary:
too much noise from this warning
![image](https://user-images.githubusercontent.com/5086322/81123764-b6e15900-8ee8-11ea-8f2f-49d69ddde25d.png)
Pull Request resolved: pytorch#37888

Differential Revision: D21415338

Pulled By: Krovatkin

fbshipit-source-id: 8d6f1be11d8419fa54a18e167929100401da439a

.clang-tidy

@@ -24,6 +24,7 @@ modernize-*,
 -modernize-use-auto,
 -modernize-use-default-member-init,
 -modernize-use-using,
+-modernize-use-trailing-return-type,
 performance-*,
 -performance-noexcept-move-constructor,
   '