Revert "vfs: Allow userns root to call mknod on owned filesystems."

This causes issues for unprivileged containers. This should be
re-applied once the container daemon has been updated to be compatible.

This reverts commit 55956b59df336f6738da916dbb520b6e37df9fbd.

Change-Id: Ib89b0748257ecc0305034425514abd9d83b27933
1 file changed