delete hoge

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

@@ -17,7 +17,6 @@ $bgcolor-tags: $dark !default;
 
 // override bootstrap variables
 $border-color: $gray-700;
-$border-color-hoge: $gray-200;
 $table-dark-color: $color-table;
 $table-dark-bg: $bgcolor-table;
 $table-dark-border-color: $border-color-table;