Remove referer from Version Check
Problem
With https://gitlab.com/gitlab-org/gitlab-services/version.gitlab.com/-/issues/37 done we're no longer saving any data coming from version check. That makes the referer
that is currently being sent superfluous and a potential point of unneeded privacy concerns
Desired Outcome
referer
is no longer sent as part of the request for version check
Proposed solution
Remove the header with the REFERER