Before submitting a paper, should I remove acknowledgement for the sake of anonymity? I have this paper to submit. A professor has given great comments on a previous version of my paper. To submit I need to make it anonymous. Should I also remove my acknowledgement. I think that to mention a name in my paper might be regarded as producing a bias in my favor.
I would remove the acknowledgement. It's better to be on the safe side when you are submitting and do not disclose the data that could be used for author identification. You could always add that part back after review process is over.

If I recall correctly, I have once used a publisher-supplied Latex template that automatically generated pdf file with authors' names and acknowledgement section removed for the sake of anonymity, so the practice of not giving out that kind of information in review copies seems to exist. (EDIT: I remembered well. ACM's sigconf template can be configured for anonymity - in that case acknowledgement section is removed from output pdf file, while in non-anonymous mode this information is retained in the output).