Revert "[cuDNN][cuDNN V8 API] (re-re-open) cuDNN V8 API on by default (#89022)"
This reverts commit eecd621f06d97d51072d924749a5d54b081295a0.
Reverted https://github.com/pytorch/pytorch/pull/89022 on behalf of https://github.com/ngimel due to breaks some convolution configurations #91025
