chore(storefront): STRF-7084 remove RSS links from head

[bookernath]

What?

This variable does not return anything, so it should not be here.

There is no head.rsslinks in the context.

Tickets / Documentation

• STRF-7084

[bigbot]

Autotagging @bigcommerce/storefront-team @davidchin

[bookernath]

ping @bigcommerce/storefront-team

[junedkazi]

What about RSS stuff in other places like;

• cornerstone/lang/en.json

  Line 464 in 0d295df

  "rss": {

• cornerstone/templates/pages/page.html

  Line 22 in e9c925a

  {{> components/page/rss_feed}}

• https://github.com/bigcommerce/cornerstone/blob/f67b549f23110a61bb204bba9e67fdf9228cf3f1/templates/components/page/rss_feed.html

[bookernath]

@junedkazi some of those things still work, and some of them don't. We can take them one at a time.

I have high confidence in the change within this PR, because as far as I can tell, this variable has never done anything.