The header files dirent_format.h and disk_groups_format.h are included
twice. Remove the redundant includes and the following warnings reported
by make includecheck:
disk_groups_format.h is included more than once
dirent_format.h is included more than once
Reviewed-by: Hongbo Li <lihongbo22@huawei.com> Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>