Removed call to commnt from the test to avoid failures in nightly builds. Now...

Removed call to commnt from the test to avoid failures in nightly builds.  Now uses a fixed string for the time instead.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@3715 41f8697f-d340-4b68-9986-7bafba869bb8