Remove Vercel deployment instructions

Removed deployment instructions for Vercel from README.

Author: Beckash

README.md

@@ -50,16 +50,6 @@ npm test
 npm run build
 ```
 
-## Deploy
-
-Import the repository into [Vercel](https://vercel.com/new). No environment variables, backend, or database are required.
-
-After deployment:
-
-1. Add the Vercel project URL near the top of this README.
-2. Record a short pathfinding-to-sorting demo as `docs/demo.gif`.
-3. Link the GIF to the live deployment.
-
 ## Stack
 
 Next.js 15 App Router · React 19 · TypeScript · Tailwind CSS v4 · Vitest