refactor: replace react-countup with @number-flow/react

components/icons.tsx

@@ -1,5 +1,3 @@
-// miscellaneous icons that are not part of lucide-react
-
 export const Win95Icon = ({ className }: { className?: string }) => (
   <svg
     xmlns="http://www.w3.org/2000/svg"
@@ -14,20 +12,6 @@ export const Win95Icon = ({ className }: { className?: string }) => (
   </svg>
 );
 
-export const MarkdownIcon = ({ className }: { className?: string }) => (
-  <svg
-    xmlns="http://www.w3.org/2000/svg"
-    fill="currentColor"
-    stroke="currentColor"
-    strokeWidth="0"
-    viewBox="0 0 24 24"
-    className={className}
-    aria-hidden="true"
-  >
-    <path d="M22.27 19.385H1.73A1.73 1.73 0 010 17.655V6.345a1.73 1.73 0 011.73-1.73h20.54A1.73 1.73 0 0124 6.345v11.308a1.73 1.73 0 01-1.73 1.731zM5.769 15.923v-4.5l2.308 2.885 2.307-2.885v4.5h2.308V8.078h-2.308l-2.307 2.885-2.308-2.885H3.46v7.847zM21.232 12h-2.309V8.077h-2.307V12h-2.308l3.461 4.039z" />
-  </svg>
-);
-
 export const GitHubIcon = ({ className }: { className?: string }) => (
   <svg
     xmlns="http://www.w3.org/2000/svg"