BuddyPress.org

Make a copy of your BP theme. Delete all folders you see here https://trac.buddypress.org/browser/tags/1.2.7/bp-themes/bp-default except _inc/ folder if you have your CSS file and images parked there. Then delete all BP references/code/templatetags you see in the remaining files – header.php, funcions.php etc.And, don’t forget to delete bp-custom.php from plugins folder if you have one.