[Rails] Remove profile link from super admin dashboard

[rudokemper]

When logged in as a super admin (e.g. via username super@terrastories.io and password terrastories per the default seed data), you access a unique dashboard for the super admin user.

At the top right, there is a leftover Profile link from other user role dashboards, which is currently leading to an error page. Let's remove this link.

[asheerrizvi]

I can take this @rudokemper

[rudokemper]

Thanks @asheerrizvi! I assigned you.

[asheerrizvi]

@rudokemper have opened a PR for this: #814

[rudokemper]

Hey @asheerrizvi we just merged that administrate refactor branch; can you submit your PRs for the main TS branch?

[asheerrizvi]

@rudokemper done, you can check now.

[asheerrizvi]

@rudokemper we can close this as per Laura's comment on the PR:

#814 (comment)

[rudokemper]

Thanks @asheerrizvi; sorry for the miscommunication on this one.