pkg/system: remove deprecated GetOSVersion(), consts, SecurityInfo utils.
pkg/system: remove deprecated GetOSVersion(), consts, SecurityInfo utils.

This removes the deprecated wrappers, so that the package no longer has
hcsshim as a dependency. These wrappers were no longer used in our code,
and were deprecated in the 20.10 release (giving external consumers to
replace the deprecated ones).

Note that there are two consts which were unused, but for which there is
no replacement in golang.org/x/sys;

    const (
        PROCESS_TRUST_LABEL_SECURITY_INFORMATION = 0x00000080
        ACCESS_FILTER_SECURITY_INFORMATION       = 0x00000100
    )

PROCESS_TRUST_LABEL_SECURITY_INFORMATION is documented as "reserved", and I could
not find clear documentation about ACCESS_FILTER_SECURITY_INFORMATION, so not sure
if they must be included in golang.org/x/sys: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dtyp/23e75ca3-98fd-4396-84e5-86cd9d40d343

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

bearstech/moby,nawawi/docker,moby/moby,AkihiroSuda/docker,djs55/docker,nalind/docker,djs55/docker,moul/docker,gnailuy/docker,moul/docker,vdemeester/docker,Ramzec/docker,AkihiroSuda/docker,jimjag/docker,flavio/docker,flavio/docker,jameszhan/docker,konstruktoid/docker-upstream,jameszhan/docker,vdemeester/docker,Mokolea/docker,jthelin/docker,mahak/docker,cpuguy83/docker,paralin/docker,yosifkit/docker,konstruktoid/docker-upstream,Mokolea/docker,yosifkit/docker,trebonian/docker,moby/moby,paralin/docker,moby/moby,thaJeztah/docker,flavio/docker,moul/docker,trebonian/docker,docker/docker,gnailuy/docker,thaJeztah/docker,jimjag/docker,AkihiroSuda/docker,Ramzec/docker,trebonian/docker,cpuguy83/docker,thaJeztah/docker,docker/docker,jimjag/docker,AkihiroSuda/docker,trebonian/docker,cpuguy83/docker,jimjag/docker,mahak/docker,gnailuy/docker,nalind/docker,vdemeester/docker,konstruktoid/docker-upstream,mahak/docker,yosifkit/docker,docker/docker,moby/moby,bearstech/moby,nawawi/docker,gnailuy/docker,djs55/docker,yosifkit/docker,thaJeztah/docker,nawawi/docker,moul/docker,flavio/docker,jameszhan/docker,Mokolea/docker,nawawi/docker,bearstech/moby,bearstech/moby,paralin/docker,nalind/docker,paralin/docker,jthelin/docker,Ramzec/docker,nalind/docker,konstruktoid/docker-upstream,Mokolea/docker,mahak/docker,cpuguy83/docker,Ramzec/docker