Hide admin activity for BuddyPress / BuddyBoss

buddy_hide_admin_activity.php

// hide admin's activities from all activity feeds
function ( $a, $activities ) {	
	
	// ... but allow admin to see his activities!
	if ( is_super_admin() )	
		return $activities;	
	
	foreach ( $activities->activities as $key => $activity ) {	
		// ID's to exclude, separated by commas. ID 1 is always the superadmin
		if ( $activity->user_id == 1  ) {			
			
			unset( $activities->activities[$key] );			
			
			$activities->activity_count = $activities->activity_count-1;			
			$activities->total_activity_count = $activities->total_activity_count-1;			
					$activities->pag_num = $activities->pag_num -1;				
		}		
	}		
	// Renumber the array keys to account for missing items 	
	$activities_new = array_values( $activities->activities );		
	$activities->activities = $activities_new;	
	
	return $activities;
	
}
add_action( 'bp_has_activities', 'buddy_hide_admin_activity', 10, 2 );