remove unnecessary default check

Co-authored-by: pookmish <[email protected]>

src/components/paragraphs/stanford-card/card-paragraph.tsx

@@ -20,7 +20,7 @@ const adjustHeadingType = (size?: "larger" | "smaller", heading: "h2" | "h3" | "
     h3: 3,
     h4: 2,
   }
-  if (!headingTypes[heading] || !size || size === "default") return ""
+  if (!headingTypes[heading] || !size) return ""
   let type = headingTypes[heading]
   if (size === "larger") {
     type += 1