py-class-gnome-common: don't exclude hunspell
    
    When trying to build the python classroom lab for armhfp
    we see issues [1] because we need hunspell.
    
    [1] https://pagure.io/dusty/failed-composes/issue/9#comment-495037
    
    Signed-off-by: Dusty Mabe <dusty@dustymabe.com>