Remove explicit SASS linting from travis build
Remove explicit SASS linting from travis build

This is now done automatically by ember-cli-sass-lint

jrjohnson/frontend,ilios/frontend,djvoa12/frontend,thecoolestguy/frontend,jrjohnson/frontend,gabycampagna/frontend,gboushey/frontend,djvoa12/frontend,dartajax/frontend,dartajax/frontend,thecoolestguy/frontend,ilios/frontend,gabycampagna/frontend,gboushey/frontend