gio/fam: Remove leftover debug print

This leftover debug print was introduced by d682df186e
and is obviously bad for applications that are expecting something
else on stdout, etc.

See: https://bugzilla.redhat.com/show_bug.cgi?id=1396386

https://bugzilla.gnome.org/show_bug.cgi?id=780144

gio/fam/gfamfilemonitor.c

@@ -140,8 +140,6 @@ g_fam_file_monitor_is_supported (void)
 
   g_mutex_unlock (&fam_lock);
 
-  g_print ("II %d\n", fam_initialised);
-
   return fam_initialised;
 }