Hi,
To remove it, add this filter in a child theme or create a plugin out of it:
add_filter( 'bbp_no_breadcrumb', '__return_true' );
If you don’t want to do it yourself, you can always install a plugin like ‘bbP Toolkit’ and set it in the options.
Pascal.
		
	 
	
	
	
 
		
			
	
	
		
		I have install bbP Toolkit and enable Remove breadcrumb completely.
But breadcrums are still at the top of the page. How to clean the top of site?
Форум туристический обстоятельный
		
	 
	
	
	
 
		
			
	
	
		
		 @tovabora
You can also use this CSS to remove the breadcrumbs if the code  @casiepa gave you doesn’t remove it. 
Place this CSS anywhere you can place custom CSS like in your child themes style.css file or in a seperate plugin.
div.bbp-breadcrumb {
    display: none !important;
}
While browsing your forums though I did come across these common theme style issues that are conflicting with bbPress.
Add both these CSS code snippets into your child themes style.css file or in a separate custom css plugin.
This CSS should fix the gray avatar on your forum profile. 
#bbpress-forums #bbp-user-avatar .avatar {
    float: none;
}
This should fix the avatars looking off in your forums.
#bbpress-forums a img.alignnone {
    display: inline;
    margin: 0;
}