There is no charge to leave your profile on the site, however, you may cancel your membership at any time.
In the top nav bar, click on the "Profile" dropdown. It will expand.
Click on the ( Menu) icon on the top right corner of the page. The menu will expand.
Then click on the dropdown that says "My Profile". It will expand.
Then click on Edit Settings in the list of links.
Then click the Cancel Membership link in the list of links.
Fill out the form and click the "Cancel Membership" button at the bottom of the page.
You can temporarily HIDE your profile, instead of canceling. That way your profile will not be deleted permanently.
If you just want to take a break from the site for awhile, then hiding your profile is better than canceling.