How to revoke sudo access?

To revoke sudo access from a user, you can remove them from the sudo group. Here’s how to do it:

Open a terminal.
Use the following command to remove the user (replace username with the actual username) from the sudo group:
```
sudo deluser username sudo
```
To verify that the user has been removed from the sudo group, you can check the groups associated with the user:
```
groups username
```

The output should no longer include the sudo group, indicating that the user no longer has sudo access.