cdutil times criteriaargclim is useless and leads to error

[doutriaux1]

https://github.com/UV-CDAT/uvcdat/blob/master/Packages/cdutil/Lib/times.py#L1359
prevents to pass None as valid criteriaargclim, and with generalCriteria it leads to an error, we simply need to comment this line out

But in general I think the criteriaarg for clim is not needed and can probably be completely removed sinceI don't think anybody ever came (or will come up) with a personalized criteria.