Hey @kjons, 
Thanks for your post. There are two ways to remove Facebook from your account:

Facebook Login Settings
If you previously logged into Strava using Facebook you'll need to create a password. The best way to do this is to go to use the password recovery process. Go to https://www.strava.com/account/recover and enter the email address used in your Facebook account. You should receive a link to reset your password within minutes.

Facebook Connection Removal
Access your Strava settings on the website: https://www.strava.com/settings/profile. On the right side under 'Social Connections' > under Facebook, select disconnect.

If you need any further assistance with your account, please submit a support ticket and someone from our Support Team will be able to assist you with this.