DEV: Small SCSS cleanup

DEV: Small SCSS cleanup

diff --git a/assets/stylesheets/footnotes.scss b/assets/stylesheets/footnotes.scss
index ae3fba8..4d7f3e2 100644
--- a/assets/stylesheets/footnotes.scss
+++ b/assets/stylesheets/footnotes.scss
@@ -5,10 +5,7 @@ $footnote-tooltip-border: var(--primary-medium);
   button.expand-footnote {
     padding: 0px 0.5em;
     margin: 0 0 0 0.25em;
-    color: var(
-      --primary-low-mid-or-secondary-high,
-      dark-light-choose($primary-low-mid, $secondary-high)
-    );
+    color: var(--primary-low-mid-or-secondary-high);
     border-radius: 3px;
     min-height: 20px;
 

GitHub sha: 472159835fd2647e5f01ad9d68a04b2639480ffd