[PATCH] Revert "nvme: create 'slaves' and 'holders' entries for hidden controllers"

[Sagi Grimberg]

>> The problem is that it's the first of its kind in regard to virtual
>> slaves/devices and many of the consumers of block device sysfs simply
>> weren't ready for it to appear where it did. Perhaps if it had been a
>> different part of sysfs hierarchy and/or linked up a different way
>> (virtual-slaves/?) it would have been invisible to programs that
>> weren't ready to consume it...
> 
> Yes, I think we should simply creates a paths/ directory.  Not sure
> there is much point in the backlink.

I'm good with this.