Oh I see, you were talking about the individual team member post, not the content that the shortcode/template tag returns; sorry for the confusion. ??
You won’t need to make changes to the shortcode or use the function above. The styles for the inner team pages (i.e. /team-member/kevin) are being controlled by your theme’s single.php file.
Duplicate the single.php file in your theme and then rename the duplicate to single-team-member.php (team-member being the plugins post type); you should then be able to open that file and remove the portion that would display author content on the individual team member posts.
Upload the newly created single-team-member.php file to your theme/child theme directory and you should be good to go.