Fix Vercel deployment configuration

🔧 DEPLOYMENT FIX:
- Removed conflicting 'functions' property from vercel.json
- Kept 'builds' configuration for static site deployment
- Resolves: 'functions property cannot be used with builds property' error

✅ Ready for: Successful Vercel import and deployment

Author: W3JDev

vercel.json

@@ -28,11 +28,6 @@
     "installCommand": "npm install",
     "devCommand": "npm run dev",
     "framework": "vite",
-    "functions": {
-        "app/api/**/*.ts": {
-            "runtime": "@vercel/node"
-        }
-    },
     "rewrites": [
         {
             "source": "/((?!api/).*)",