It's benign. It's telling you that the linker figured out that it didn't need to reference OLEAUT32.DLL after all (something pulled it in), so it discarded the reference. It's really just for your information.
I don't profess to fully understand this message, but I have encountered it before. I don't think you'll find am actual call in your code. The reference to the DLL is most likely coming from one of a couple of places:
1) Settings..Link..Libraries/object modules, OLEAUT32.LIB listed2) A USE OLEAUT32 in your code (I had thought perhaps USE DFWIN would pull this in, but it seems not.)
The simplest solution is to add OLEAUT32.LIB to the list of libraries to be ignored in the Link settings tab.