test: drop some useless code in check-connection
test: drop some useless code in check-connection

We write an override for the login page to /test and try to set up
XDG_DATA_DIRS to find this instead of the normal page, but this doesn't
work.  Indeed, if it did work, it would break the tests, since the page
that we put in place doesn't have any template expansion for the title
which we assert for as our next step.

Just drop this.

martinpitt/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,mvollmer/cockpit,mvollmer/cockpit,mvollmer/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,cockpit-project/cockpit