Fix methods on https://7tv.io/v3/users/@me/profile-picture

[brian6932]

The value of access-control-allow-methods is GET,POST,PUT,PATCH,DELETE
However, when you send a DELETE, you get Method Not Allowed, you really should be able to DELETE your pfp...

[TroyKomodo]

We do not plan to fix this issue on this implementation of the API.
For more info please see https://github.com/SevenTV/SevenTV/