bbPress.org

Had a quick look and it’s using standard div naming, so I looked at how I did it in one of my plugins. The below css should hide the message, but not only that one as also these ones will be gone:
– Oh bother! No topics were found here!
– You must be logged in to create new topics
– Your account has the ability to post unrestricted HTML content

.bbp-template-notice {
	display: none;
}

.bbp-template-notice.info,
.bbp-template-notice.error,
.bbp-template-notice.important,
.bbp-template-notice.warning {
	display: block;
}

Hope you can decide…
Pascal.