Rosetta main nav menus frequently link to missing 'Support' page

[jonoaldersonwp]

See the the following examples:

• ​https://pcm.wordpress.org/plugins/browse/blocks/
• ​https://fr-be.wordpress.org/plugins/
• ​https://es-hn.wordpress.org/plugins/jetpack/

In each case, the Support link in the main nav should be removed.

It looks like this isn't always present on the homepage, so I suspect there's some hard-coded template logic on 'inner pages' (as per these examples), but, individual sites haven't created a Support page.

[iandunn]

I don't see those anymore, so I'm guessing it was fixed by an older commit. Please re-open if I'm missing something though.