Please follow the below method if you want to disable the Admin Bar for logged out users.
When you have installed Buddy Press Forum plugin, then by default it will display Admin Toolbar with Login option.
Login to your site and navigate to Settings > BuddyPress > Options > Main Settings there you can disable the option.
How to hide Admin Tool Bar
IF you want to hide Admin Tool Bar, then navigate to Admin Panel > Settings > Your Profile there you can disable toolbar option.
Leave A Comment?