A delete won't print anything but the headers. It could take some time to delete all of those, especially if the machine/database is in use by anything else, like search.
Thanks Mark, the window froze for a long time, then I closed it, and did a select statement
texis -d E:\CultureCaWalks\CultureCa_Site1b\db1 -s "select Url from html where Url matches 'http://www.thecanadianencyclopedia.com%'"
and it seems that all Urls were deleted!