[OE-core] meta/lib/oe/rootfs.py: dont' remove any packages by default

[Nicolas Dechesne]

On Fri, Jul 31, 2015 at 1:12 PM, Paul Eggleton
<paul.eggleton at linux.intel.com> wrote:
>> I am not sure to understand the relationship between runtime package
>> management, and adding/removing users? Why would no runtime package
>> management, imply no need to add/remove users?
>
> I guess the underlying assumption is that if you have no package manager, in a
> typical embedded context (if there is such a thing) that implies you won't be
> changing the system after setup.

well, that still sounds like 2 separate 'features'.. i think it might
be a good idea to split them out...