In the smtlib grid generator test, don't mention cvc3.

Due to some copy+paste errors, cvc3 was mentioned in smtlib test code.  Rename
the references as appropriate.

git-svn-id: https://groke.mcmaster.ca/svn/grad/colin/branches/TableTool_javization@10664 57e6efec-57d4-0310-aeb1-a6c144bb1a8b