Remove code for using our own build cudnn image, use nvidia image (#71952)
Summary:
Remove code for using our own build cudnn image, use nvidia imag
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71952
Reviewed By: mrshenli
Differential Revision: D33845873
Pulled By: atalman
fbshipit-source-id: 59806dedd925a13700ddf090f32c8c4dae10692d
(cherry picked from commit 90e4755658adb5738ec8c37377e4bd5a276c76c5)
