Delete CNAME

received warning from GitHub.  Apparently a CNAME file is no benefit if i'm not changing the domain.

```
The page build completed successfully, but returned the following warning for the `master` branch:

You cannot use CNAMEs ending with github.io or github.com. Instead, create a repository named OuhscBbmc.github.io. See https://help.github.com/articles/setting-up-your-pages-site-repository/

For information on troubleshooting Jekyll see:

  https://help.github.com/articles/troubleshooting-jekyll-builds

If you have any questions you can contact us by replying to this email.
```