Undefined DDL function on Auctions core module

It is a ddl() function which is used for Devel Debug Log to check development logs.
The ddl() function is not defined anywhere in the module, that is why getting an error while clearing a cache.

We can remove the ddl() function and error will be fixed.
Here I have attched a patch file where am removing the ddl() in the file.
Kindly verfiy it and add it to next release in the module.