Completely Disable @Mentions in BuddyPress

I want to completely disable @mentions feature on my BuddyPress site. It just hasn't proven too useful and confuses users more than anything.

I want to remove the @username/handler from all user's profile page, remove the menu item from Activity Stream, and completely remove this attribute's functionality from my site.

Would someone please help me out with this? Please respond ASAP. Thanks in advance.