In some cases, our users get a little click-happy and hit things by mistake. If you have started your draft accidentally, the best thing to do is to pause it until you're ready. You can keep it paused for months, and it won't start again until the commissioner prompts it to.
While we don't offer a way to delete or undo a draft, you can always bypass one by starting it and ending it without actually making any picks.
Enter the draft lobby and go to the settings icon in the top-right corner. You'll want to select "Start Draft" if it has not begun already. Then, go back to the settings and select "End Draft".
This will effectively nullify the draft, without drafting any players to any teams.