TorchMultimodal CLIP benchmark example (#2033)
Summary:
Now that the torchtext dependency has been dropped from TorchMultimodal, we can move it back from canary_models to models.
Tested via
```
python test.py -k "torch_multimodal_clip"
........
----------------------------------------------------------------------
Ran 8 tests in 70.978s
OK
```
Pull Request resolved: https://github.com/pytorch/benchmark/pull/2033
Reviewed By: kartikayk
Differential Revision: D51227128
Pulled By: msaroufim
fbshipit-source-id: f040708da82bcf45e529eb232d2e14ad8e13acd5