src/idmapped-mounts: Remove useless header file

When compile xfstest on old kernel, mount-idmapped.c will fail
because of missing linux/bpf.h. But this src file doesn't use bpf
realted functions or macros.

So remove these useless header files in idmapped-mounts.c and
mount-idmapped.c.

Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2 files changed