Update src/stories/Library/list-buttons/list-buttons.scss

remove duplicated extend

Author: sinejespersen

src/stories/Library/list-buttons/list-buttons.scss

@@ -2,7 +2,6 @@
   display: flex;
   justify-content: space-between;
   @extend %text-body-medium-medium;
-  @extend %text-body-medium-medium;
 
   &__header {
     all: unset;