Continue with the mtn interface tests

- getPathInfo(), disambiguateRevision() and validateRevision() are done
- we no longer need to check / skip a format_version stanza for the extended
  manifest (there is no such stanza outputted)

src/IDF/Scm/Monotone.php

@@ -536,9 +536,6 @@ class IDF_Scm_Monotone extends IDF_Scm
         $stanzas = IDF_Scm_Monotone_BasicIO::parse($out);
 
         foreach ($stanzas as $stanza) {
-            if ($stanza[0]['key'] == 'format_version')
-                continue;
-
             if ($stanza[0]['values'][0] != $file)
                 continue;