ISTWCMS-6993: Remove the testing code background colors

src/patterns/04-components/content-grid-list/_content-grid-list.scss

@@ -49,25 +49,6 @@
        align-self: inherit;
       }
     }
-    .contact & {
-      display: block;
-
-      &.uw-content--grid-list__layout-has-style {
-        background: green;
-      }
-
-      &-name-focused {
-        background: blue;
-      }
-
-      &-title-focused {
-        background: orange;
-      }
-
-      &-default {
-        background: red;
-      }
-    }
     &.uw-content--grid-list__layout-has-style {
       &:not(&.uw-content--grid-list__layout-default,&.uw-content--grid-list__layout-uw-agenda){
         display: flex;