code: function() {
            if ( list ) {
              _each( arguments, function( arg ) {
                var index;
                while( ( index = _inArray( arg, list, index ) ) > -1 ) {
                  list.splice( index, 1 );
                  // Handle firing indexes
                  if ( firing ) {
                    if ( index <= firingLength ) {
                      firingLength--;
                    }
                    if ( index <= firingIndex ) {
                      firingIndex--;
                    }
                  }
                }
              });
            }
            return this;
          }
docs: Remove a callback from the list