Remove unneeded imports since change to css vars

src-ui/src/app/components/app-frame/app-frame.component.scss

@@ -1,4 +1,3 @@
-@import "/src/theme";
 /*
  * Sidebar
  */

src-ui/src/app/components/common/filterable-dropdown/filterable-dropdown.component.scss

@@ -1,5 +1,3 @@
-@import "/src/theme";
-
 .badge-corner {
   position: absolute;
   top: -8px;

src-ui/src/app/components/dashboard/widgets/upload-file-widget/upload-file-widget.component.scss

@@ -1,5 +1,3 @@
-@import "/src/theme";
-
 form {
   position: relative;
 }

src-ui/src/app/components/document-list/document-card-large/document-card-large.component.scss

@@ -1,5 +1,3 @@
-@import "/src/theme";
-
 .result-content {
   overflow-wrap: anywhere;
 }

src-ui/src/app/components/document-list/document-card-small/document-card-small.component.scss

@@ -1,5 +1,3 @@
-@import "/src/theme";
-
 .card-text {
   font-size: 90%;
 }

src-ui/src/app/components/document-list/document-list.component.scss

@@ -1,5 +1,3 @@
-@import "/src/theme";
-
 ::ng-deep app-document-list app-page-header > div.mb-3 {
   margin-bottom: 0 !important;
 }