message: Remove obsolete theme for ng2-bar-rating component
diff: }
  }
  -@mixin bar-rating-theme($theme) {
  - .br-default .br-units {
  - align-items: center;
  - }
  -
  - .br-default .br-unit {
  - font-size: 23px;
  - height: 18px;
  - margin-right: 5px;
  - width: 18px;
  - }
  -
  - .br-default .br-unit::after {
  - color: mat-color(map-get($theme, primary), lighter);
  - content: '\2605';
  - }
  -
  - .br-default .br-selected::after {
  - color: mat-color(map-get($theme, accent), lighter);
  - }
  -
  - .br-default .br-active::after {
  - color: mat-color(map-get($theme, accent), lighter);
  - }
  -}
  -
  @mixin score-star-theme($theme) {
  .empty-star {
  stop-color: mat-color(map-get($theme, primary));
  @include link-theme($theme);
  @include notification-theme($theme);
  @include image-thumbnail-theme($theme);
  - @include bar-rating-theme($theme);
  @include score-star-theme($theme);
  @include snackbar($theme);
  @include google-button($theme);
  