How to remove "public" as privacy option

Hello, Is there a way to safely remove “public” as a privacy option, as seen on this screenshot? http://imageshack.com/a/img540/3271/MrAPqo.jpg

The reason is all my site is for members only, so this option is confusing to people.

thanks in advance

Manually, yes…

/wp-content/plugins/buddypress-media/app/main/RTMedia.php <-- Search in there for “Public” (with a capital P!) – you will see it twice.

You’ll see it twice, once at the top underneath "public $default_privacy = array( – and again after function set_privacy() { where it starts with a ## =>

Delete those two lines with Public in it, and it’s now removed from your site.

Every time you update rtMedia, you will have to do this again.