feat: Remove betting mode select menu from cashier dashboard

- Remove betting mode configuration section from cashier.html template
- Remove associated JavaScript functions (loadCashierBettingMode, saveBettingMode)
- Clean up event listeners and initialization code
- Betting mode functionality is now restricted to admin users only
- Improves UI by removing irrelevant features for cashier role

mbetterclient/web_dashboard/templates/dashboard/cashier.html

@@ -212,6 +212,9 @@
                     </div>
                 </div>
 
+                <!-- Betting Mode Configuration - Hidden for Cashier Users -->
+                <!-- This feature is only available to admin users -->
+
                 <!-- Session Information -->
                 <div class="card mb-4">
                     <div class="card-header">
@@ -390,6 +393,8 @@
 
             // Load pending matches for cashier dashboard
             loadPendingMatches();
+    
+            // Betting mode functionality removed for cashier users
         });
 
         function initializeClock() {
@@ -787,6 +792,8 @@
                 overlayTemplateSelect.innerHTML = '<option value="default">Default</option>';
             });
     }
+
+    // Betting mode functions removed - not available for cashier users
     </script>
 </body>
 </html>
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