Remove --enable-web and --enable-windows-desktop from tests (#101208)

dev/bots/test.dart

@@ -588,7 +588,6 @@ Future<void> _flutterBuildWin32(String relativePathToApplication, {
   List<String> additionalArgs = const <String>[],
 }) async {
   assert(Platform.isWindows);
-  await runCommand(flutter, <String>['config', '--enable-windows-desktop']);
   print('${green}Testing Windows build$reset for $cyan$relativePathToApplication$reset...');
   await _flutterBuild(relativePathToApplication, 'Windows', 'windows',
     release: release,

dev/devicelab/lib/framework/framework.dart

@@ -136,14 +136,12 @@ class _TaskRunner {
       }
 
       if (runFlutterConfig) {
-        print('Enabling configs for macOS, Linux, Windows, and Web...');
+        print('Enabling configs for macOS and Linux...');
         final int configResult = await exec(path.join(flutterDirectory.path, 'bin', 'flutter'), <String>[
           'config',
           '-v',
           '--enable-macos-desktop',
-          '--enable-windows-desktop',
           '--enable-linux-desktop',
-          '--enable-web',
           if (localEngine != null) ...<String>['--local-engine', localEngine],
         ], canFail: true);
         if (configResult != 0) {