Allow Flutter Web Driver testing in debug mode. (#62577)

packages/flutter_tools/lib/src/commands/drive.dart

@@ -188,17 +188,6 @@ class DriveCommand extends RunCommandBase {
         );
       }
 
-      if (isWebPlatform && buildInfo.isDebug) {
-        // TODO(angjieli): remove this once running against
-        // target under test_driver in debug mode is supported
-        throwToolExit(
-          'Flutter Driver web does not support running in debug mode.\n'
-          '\n'
-          'Use --profile mode for testing application performance.\n'
-          'Use --release mode for testing correctness (with assertions).'
-        );
-      }
-
       Uri webUri;
 
       if (isWebPlatform) {