Hide geo completely when unlicensed

Closed Nick Thomas requested to merge nick.thomas/gitlab-ee:license-geo-admin into master

What does this MR do?

Removes Geo from the admin panel completely when unlicensed

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Context in #2335 (closed)

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

What are the relevant issue numbers?

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