Spec: remove pended spec with outdated setup

Setup for this spec uses outdated options which no longer have any
impact, and the description of the spec no longer seems relevant.

src/spec/integration/uaa/login_spec.rb

@@ -75,14 +75,6 @@
       expect(output).to match(/not logged in/)
     end
 
-    it 'fails to log in with a useful message when cli fails to validate server and no cert was specified' do
-      pending "FIXME: doesn't seem like bosh requires ca-cert to be provided when doing a log-in command. Maybe makes sense since it's needed for basically everything else."
-      bosh_runner.run("env #{current_sandbox.director_url}")
-      bosh_runner.run_interactively('log-in', no_ca_cert: true, include_credentials: false) do |runner|
-        expect(runner).to have_output 'Invalid SSL Cert. Use --ca-cert option when setting target to specify SSL certificate'
-      end
-    end
-
     it 'it fails to log in if the director cert is invalid' do
       invalid_ca_cert = <<CERT
 -----BEGIN CERTIFICATE-----