Remove duplicate title on mint page

Remove "/mint - " prefix from hero h1 to avoid duplication with PageLayout title

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: b0ase

frontend/src/pages/MintPage.tsx

@@ -430,7 +430,7 @@ const MintPage: React.FC = () => {
         `}</style>
 
         <div className="hero-mint">
-          <h1>/mint - Tokenize Your Spreadsheets</h1>
+          <h1>Tokenize Your Spreadsheets</h1>
           <p className="subtitle">
             Transform saved spreadsheets into tradeable tokens with fractional ownership 
             and automatic dividend distribution.