Remove dummy UI scenarios

Remove scenarios that just check if some UI element is present on the page.

This gives us very little as the build step/scm/whatever is going to be utilized sooner or later for actual testing, usually in the following scenario. And as it does not provide any additional diagnostic information  it is just one more scenario to fail if something goes wrong. I assume it take ~10 minutes just to run this scenarios.

Plus, it does not really make sense from BDD perspective either since this kind of scenarios does not accomplish any valuable goal.