I sold my Apple Watch and the person I sold it to can not login bc it says I’m still on the Apple watched. I have removed it from my iCloud. What do I do now?

From the article below.

If you can't access your iPhone or Apple Watch, or if your Apple Watch isn't paired with your iPhone and you need to turn off Activation Lock:

1. On a computer, go to iCloud.com and sign in with your Apple ID. 
2. Go to Find My iPhone.
3. Select All Devices, then click your Apple Watch.
4. Click Erase Apple Watch. Select Next until the device is erased.
5. Click the remove button  next to your Apple Watch.

Activation Lock on your Apple Watch