fix(flutter): 移除搜索框识剧入口

lib/pages/discover/discover_view.dart

@@ -106,7 +106,6 @@ class _DiscoverPageState extends State<DiscoverPage> {
             focusNode: logic.searchFocus,
             onChanged: (_) => logic.onSearchChanged(),
             loading: logic.searchLoading,
-            onIdentify: () => _showComingSoon(l10n),
           ),
           Expanded(child: _feed(l10n, categories)),
           if (!embedded) _bottomNav(l10n),