replace uses of numpy.long with int
Summary:
X-link: https://github.com/facebookresearch/dlrm/pull/365
`numpy.long` is long deprecated and removed from numpy-1.24.0.
This replaces all uses with equivalent type `int`. Using the following oneliner:
```
fbgr '\bnp\.long\b' -lsf '.*\.py$' | xargs perl -pi -e 's,\bnp\.long\b,int,g'
```
Reviewed By: florazzz
Differential Revision: D50723330
fbshipit-source-id: 50a85e728f8f700613268144f51e86415d99a30c