chore: remove temporary H5 cache diagnostics

lib/config/app_config.dart

@@ -8,7 +8,7 @@ class AppConfig {
   static const String appLogo = '';
   static const String canonicalWebHost = 'h5-im.imharry.work';
   static const Set<String> legacyWebHosts = {
-    'h5-im.imharry.work',
+    'h5-test.imharry.work',
   };
 
   static final Map<Environment, List<String>> _environmentHosts = {
@@ -25,10 +25,7 @@ class AppConfig {
     final host =
         environmentHosts.isNotEmpty ? environmentHosts.first : canonicalWebHost;
     final uri = Uri.parse(_normalizeHomeUrl(host));
-    final queryParameters = Map<String, String>.from(uri.queryParameters)
-      ..['_h5_t'] = DateTime.now().millisecondsSinceEpoch.toString();
-
-    return uri.replace(queryParameters: queryParameters).toString();
+    return uri.toString();
   }
 
   static String withFreshShellParams(String url) {
@@ -52,14 +49,10 @@ class AppConfig {
       return uri.toString();
     }
 
-    final queryParameters = Map<String, String>.from(uri.queryParameters)
-      ..['_h5_t'] = DateTime.now().millisecondsSinceEpoch.toString();
-
     return uri
         .replace(
           scheme: 'https',
           host: canonicalWebHost,
-          queryParameters: queryParameters,
         )
         .toString();
   }