fix: remove redundant link below header

Author: Quantum-Yeti

index.html

@@ -31,7 +31,6 @@ <h1>
   </h1>
   <p>
     <a href="https://github.com/quantum-yeti">GitHub</a> •
-    <a href="https://quantumyeti.github.io">Portfolio</a> •
     <a href="https://play.google.com/store/apps/dev?id=8208308725281252914">Google Play</a> •
     <a href="https://www.sheetmusicplus.com/en/category/publishers/t/theoria-music-publishing/">Sheet Music</a>
   </p>