Remove repeated demo notes from product screens (#28)

frontend/app/lib/workspace/transfer.dart

@@ -138,8 +138,6 @@ class TransferPageState extends State<TransferPage> {
                   ],
                 ),
                 const SizedBox(height: 20),
-                Text(l.wDemoMethodHelp, style: t.textTheme.bodySmall),
-                const SizedBox(height: 24),
                 Focus(
                   key: _content,
                   focusNode: _focus,