util: remove unused args from virNetDevSetVfConfig()
util: remove unused args from virNetDevSetVfConfig()

This function is only called in two places, and the ifindex,
nltarget_kernel, and getPidFunc args are never used (and never will
be).

ifindex - we always know the name of the device, and never know the
ifindex - if we really did need the ifindex we would have to get it
from the name using virNetDevGetIndex(). In practice, we just send -1
to virNetDevSetVfConfig(), which doesn't bother to learn the real
ifindex (you only need a name *or* an ifindex for the netlink command
to succeed, not both).

nltarget_kernel - messages to set the config of an SRIOV VF will
always go to netlink in the kernel, not to another user process, so
this arg is always true (there are other uses of netlink messages
where the message might need to go to another user process, but never
in the case of RTM_SETLINK for SRIOV).

getPidFunc - this arg is only used if nltarget_kernel is false, and it
never is.

None of this has any functional effect, it just makes it easier to
follow what's happening when virNetDevSetVfConfig() is called.

nertpinx/libvirt,olafhering/libvirt,eskultety/libvirt,nertpinx/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,zippy2/libvirt,datto/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,crobinso/libvirt,crobinso/libvirt,VenkatDatta/libvirt,olafhering/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,datto/libvirt,datto/libvirt,nertpinx/libvirt,zippy2/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,eskultety/libvirt,eskultety/libvirt,zippy2/libvirt,olafhering/libvirt,andreabolognani/libvirt,datto/libvirt,jfehlig/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,olafhering/libvirt,nertpinx/libvirt,jardasgit/libvirt,eskultety/libvirt,zippy2/libvirt,libvirt/libvirt,libvirt/libvirt,datto/libvirt,eskultety/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,crobinso/libvirt,andreabolognani/libvirt,jfehlig/libvirt,nertpinx/libvirt,libvirt/libvirt,libvirt/libvirt,crobinso/libvirt,VenkatDatta/libvirt