http://iscoresports.com/

Is there any way to keep the same team but just update the roster as a new season? When looking at the stats page I don't wanna see the old players. Is there any way to do that?

Use Leagues to manage different seasons.

Use active/inactive player designation to manage active players.

Will this remove the player from the team website?
I don't want to delete the player, but need to get her "off the team".

You can log in to the Team Website with your Admin password, go to settings, and there is an option called "Show Players" where you can decide to show all players, only Active players, or you can filter players by league as well.

If you just want the player completely off your team, you can always go to Team Manager on the device, select the team, select Roster, and remove the player from there. This removes the player from the team, but does not actually delete the player. You would then do an Options -> Export to update your website.