The CUPS ipptool URL we were checking now redirects to github where the tarball
isn't present, so remove it from the test suite.
(Bitbake rev: 4b50895fb3462b21e3874a2e99c363c8d05e89e6)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>