In order to remove a team member, you need to point to "..." in the Action column for the team member you are trying to remove.
After you see a list of possible actions.
Click on the button Delete:

A modal window will open with confirmation, click on the I'm sure button (if the action was incorrect, click on the No button):

After successfully deleting a team member, you will receive a notification that User has been successfully deleted and the system will automatically delete him from the table: