Remove the `Instructions` part in https://storj.io/tokensale.html

[MeijeSibbel]

We have some community members that think they can still send ETH to the token sale address.

Adding something like a Thank You! , The token sale has finished would also help to avoid confusion.

[super3]

@MeijeSibbel Up at the top, and we will be removing the top banner to the website soon so there should be no direct links to that page.