Remove old (breaking) imports.

The breadcrumbs had redundant import :(

hshassets/assets/sass/breadcrumbs.scss

-@import 'lib/bulma-0.5.1/sass/utilities/variables.sass';
-@import 'lib/bulma-0.5.1/sass/utilities/mixins.sass';
-
 div.breadcrumb-wrapper {
     box-shadow: 0 2px 3px rgba(10, 10, 10, 0.1);
     margin-bottom: 5px;