diff --git a/lib/pik/scripts/batch_file.rb b/lib/pik/scripts/batch_file.rb
index 4d06617..a0b71bc 100644
--- a/lib/pik/scripts/batch_file.rb
+++ b/lib/pik/scripts/batch_file.rb
@@ -26,11 +26,6 @@ def copy(src, dest)
       @lines << "copy /y #{src} #{dest}"
     end
 
-    def unset(*items)
-      items.flatten.each{|k| @lines << "SET #{k}=" }
-      self
-    end
-
   end
 
 end
\ No newline at end of file