hide external links' icon.

src/theme/Navbar/Content/index.tsx

@@ -107,7 +107,7 @@ export default function NavbarContent(): JSX.Element {
           </div>
         </div>
         <div>
-          <nav className={styles.menu}>
+          <nav className={clsx(styles.menu, styles.links)}>
             <NavbarItems items={links} />
           </nav>
         </div>

src/theme/Navbar/Content/styles.module.scss

@@ -263,3 +263,9 @@ Hide color mode toggle in small viewports
     visibility: visible;
   }
 }
+
+.links {
+  a svg {
+    display: none !important;
+  }
+}