Remove back to NoFi button from hero section

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

components/sections/HeroSection.tsx

@@ -79,13 +79,6 @@ export default function HeroSection() {
           Everything flows. The question is: <span className="text-flow/70">where?</span>
         </p>
 
-        <a
-          href="https://nofi.lol"
-          className="inline-block border border-flow/15 px-8 py-3 text-sm text-foam/30 hover:text-flow/60 hover:border-flow/40 hover:bg-flow/5 transition-all duration-700 rounded-full"
-        >
-          ← back to NoFi
-        </a>
-
         <div className="absolute bottom-10 left-1/2 -translate-x-1/2 animate-current">
           <span className="text-foam/15 text-sm font-light tracking-wide">scroll to flow ↓</span>
         </div>