Removing checks for version 1.x

Remove unnecessary full url check in `normalize_url` method in [application_router.rb](https://github.com/appfolio/ae_page_objects/blob/130b710b85fcc95e2e2d03fe2f95feb21331ebcd/lib/ae_page_objects/core/application_router.rb)
since the domain and protocol part are already removed [here](https://github.com/appfolio/ae_page_objects/blob/v1.4.0/lib/ae_page_objects/node.rb#L49-L55)
