Remove calligra-l10n-* from additional packages
    
    Currently the l10n support is moved to a single calligra-l10n package
    (which is a subpackage of calligra itself) as opposed to previously
    separate calligra-l10n package with a separate subpackage for each
    language (which is now retired).
    
    Due `greedy_method = "build"` the l10n subpackage will be pulled into
    the compose if some package from the same build gets in (i.e. the main
    calligra package required by comps).
    
    Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>