Remove two wav files in tacotron2. (#633)
Summary:
On the main branch, after running `install.py`, the git repo will become dirty, showing these to files are modified:
```
(py38) [ec2-user@ip-10-0-8-37 benchmark]$ git status
On branch main
Your branch is up to date with 'origin/main'.
Changes to be committed:
(use "git restore --staged <file>..." to unstage)
modified: torchbenchmark/models/tacotron2/demo.wav
modified: torchbenchmark/models/tacotron2/waveglow/tacotron2/demo.wav
```
This PR removes these two files and other two git lfs files which are not used in the benchmark.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/633
Reviewed By: aaronenyeshi
Differential Revision: D33023171
Pulled By: xuzhao9
fbshipit-source-id: 752f5726bedb45e0a9f0f988f607f735d1d950cf
