fix test

flat repos may have architecture which is needed for filtering dependencies

deb/remote_test.go

@@ -115,7 +115,6 @@ func (s *RemoteRepoSuite) TestInvalidURL(c *C) {
 func (s *RemoteRepoSuite) TestFlatCreation(c *C) {
 	c.Check(s.flat.IsFlat(), Equals, true)
 	c.Check(s.flat.Distribution, Equals, "./")
-	c.Check(s.flat.Architectures, IsNil)
 	c.Check(s.flat.Components, IsNil)
 
 	flat2, _ := NewRemoteRepo("flat2", "http://pkg.jenkins-ci.org/debian-stable", "binary/", []string{}, []string{}, false, false, false)