[PATCH review 13/13] userns: Remove the now unnecessary FS_USERNS_DEV_MOUNT flag

[Seth Forshee]

On Mon, Jun 20, 2016 at 12:21:30PM -0500, Eric W. Biederman wrote:
> Now that SB_I_NODEV controls the nodev behavior devpts can just clear
> this flag during mount.  Simplifying the code and making it easier
> to audit how the code works.  While still preserving the invariant
> that s_iflags is only modified during mount.
> 
> Signed-off-by: "Eric W. Biederman" <ebiederm at xmission.com>

Acked-by: Seth Forshee <seth.forshee at canonical.com>