Remove an obsolete comment
Remove an obsolete comment

Commit 313b5ff5376b8182f3fb3fea11104d3e239fe38a has removed the scheme
support and changed the test line below the comment not to have a scheme.

Signed-off-by: Miloslav Trmač <9c008e38982a5397deb855345fb164f0558459ae@redhat.com>

containers/image,containers/image