diff --git a/lib/mongo/gridfs/grid_file_system.rb b/lib/mongo/gridfs/grid_file_system.rb
index 9929b98..ede3d74 100644
--- a/lib/mongo/gridfs/grid_file_system.rb
+++ b/lib/mongo/gridfs/grid_file_system.rb
@@ -53,10 +53,6 @@ module Mongo
     end
     alias_method :unlink, :delete
 
-    def remove_previous_versions
-      ids = @files.find({'filename' => filename}, :sort => [['filename', 1]])
-    end
-
     private
 
     def default_grid_io_opts(filename=nil)