As a team owner, you hold the power to decide who is going to be the member of your team. There are 2 ways you can remove team members from your team.
1. From the My Teams page on the navigation menu on the left
Click on My Teams page, and then choose the team you would like to remove a member from.
Click on "Manage team" in the upper right corner.
Choose the "Team members" tab. Hover over the team member you want to remove, and click on the "x" to remove the user.
Confirm removal.
Removed team member will disappear from the Team Members list.
2. From the User profile menu in the upper right corner
Select "Manage account", then click on "Team Members" tab.
All next steps are the same as described above.