Team members can be removed from the specific team.
Follow the procedure to remove a team member from a specific team:
Select the team that you want to delete from the Collection Teams section on the left-hand panel.
Edit the team by clicking button. The Collection Teams screen appears.
Select the team members who you would like to remove from the team by ticking the checkbox beside the member name.
Click on (More button) on the top right-hand corner. On the opened up menu click on (Delete Member(s) button).
A confirmation message will be displayed. Click on OK to remove the selected team member(s).
Links:
Accessing & Understanding Collection Teams Screen
Managing Teams/Team Members Permission