[fix] took out captain_value type hint in registration admin list_display
[fix] took out captain_value type hint in registration admin list_display

rdonnelly/ultimate-league-app,a2ultimate/ultimate-league-app,rdonnelly/ultimate-league-app,a2ultimate/ultimate-league-app,a2ultimate/ultimate-league-app,rdonnelly/ultimate-league-app,a2ultimate/ultimate-league-app,rdonnelly/ultimate-league-app