block/commit: Drop bdrv_child_try_set_perm()

commit_top_bs never requests or unshares any permissions.  There is no
reason to make this so explicit here.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1 file changed