Wklnhst.dat : Scanners Not Reporting Malware

I was told that I should scan the file wklnhst.dat (properties say its a DAT file, 11KB) in order to get rid of it. It was in APPDATA/ROAMING - not in a folder- just on it's own, the last item there. This after having my machine repaired of all kinds of malware. But this particular item was never mentioned by the original person cleaning the machine. Not sure if they saw it.

I scanned with with a-squared, Superanti-Spyware and Malwarebytes (all are updated and I have the real time version of a-squared which is always running. None of them report it as malware/nothing is being detected when I scan it (or scan the whole C drive). Do I really need to remove this? I know dates can be falsified but it says it was created and then accessed on the same date around when I bought it and started using it (the computer). Then it was "updated" this year in June (not by me). If I should remove it but the scanners aren't picking anything up can I just delete it or is that too dangerous?