Remove unused ModerationBanner SCSS

src/styles/sidebar/components/ModerationBanner.scss

-@use '../../variables' as var;
-@use '../../mixins/layout';
-
-@at-root {
-  // Horizontal margin between edge of annotation card and content
-  $h-padding: 15px;
-
-  .ModerationBanner {
-    @include layout.row;
-    position: relative;
-    color: white;
-    font-weight: bold;
-  }
-
-  // The moderation banner on top-level annotations spans the full width
-  // of the annotation card and has rounded top corners to match an un-flagged
-  // annotation.
-  //
-  // The left and right edges of the content are horizontally aligned with the
-  // content of the annotation below.
-  .ModerationBanner:not(.is-reply) {
-    left: -$h-padding;
-    padding-bottom: 5px;
-    padding-left: $h-padding;
-    padding-right: $h-padding - 5px;
-    padding-top: 5px;
-    top: -$h-padding;
-    width: calc(100% + #{$h-padding} * 2);
-
-    border-top-left-radius: 2px;
-    border-top-right-radius: 2px;
-  }
-
-  // The moderation banner on replies is a little more vertically compact. Its
-  // right-edge aligns with the right edge of the annotation thread. The left edge
-  // is aligned with the left edge of the reply.
-  .ModerationBanner.is-reply {
-    margin-top: 10px;
-    margin-bottom: 5px;
-    width: calc(100% + #{$h-padding});
-
-    padding-left: 5px;
-    padding-right: $h-padding - 5px;
-    padding-top: 3px;
-    padding-bottom: 3px;
-  }
-
-  .ModerationBanner.is-flagged:not(.is-hidden) {
-    background-color: var.$color-brand;
-  }
-
-  .ModerationBanner.is-hidden {
-    background-color: var.$grey-6;
-  }
-}

src/styles/sidebar/components/_index.scss

@@ -28,7 +28,6 @@
 @use './Menu';
 @use './MenuItem';
 @use './MenuSection';
-@use './ModerationBanner';
 @use './NotebookView';
 @use './NotebookResultCount';
 @use './PaginationNavigation';