How to remove Dart DevTools?

Try to run this command :

flutter pub global deactivate devtools

Go to Settings and change the Open Dev Tools Settings to never. If asked after running the app, select Don't Ask again.

Follow these steps

First go to extension in Vs Code and select Dart extension

Now click on setting Icon

Now search Dart: Dev Tools Port in search bar

Now click on setting icon of Dart: Dev Tools Port

Then click on Reset Setting

For more information please this documentation Dart settings

To disable DevTools:

Open VS Code settings and search for Dart: Open Dev Tools and set it to never. (Removing "dart.openDevTools": "flutter" from settings.json should work too)

To uninstall/remove DevTools, you can run:

• pub global deactivate devtools (if you have pub on your path)
• or flutter pub global deactivate devtools (if you have flutter on your path)