Removed edits related to code mirrors.

src/client/styles/scss/theme/_apply-colors.scss

@@ -524,12 +524,3 @@ mark.rbt-highlight-text {
 .grw-btn-page-management:focus {
   background-color: rgba($color-link, 0.15);
 }
-
-// override-codemirror elegant-theme
-
-.CodeMirror.cm-s-elegant {
-  .CodeMirror-gutters {
-    background-color: $gray-50;
-    border-right-color: $border-color;
-  }
-}