danwinship: Remove some dead code in the ipvs proxy

JobBuild
105450
11-11 23:55
508d5749
11-11 23:53
pull-kubernetes-conformance-kind-ga-only-parallel 1459005705934606336 1458945943540862976
pull-kubernetes-dependencies 1459005705766834176 1458945943385673728
pull-kubernetes-e2e-gce-100-performance 1459005706026881024 1458945943641526272
pull-kubernetes-e2e-gce-ubuntu-containerd 1459005705800388608 1458945943410839552
pull-kubernetes-e2e-kind 1459005705863303168 1458994478550355968 1458945943469559808
pull-kubernetes-e2e-kind-ipv6 1459005705896857600 1458945943507308544
pull-kubernetes-integration 1459005705833943040 1458945943444393984
pull-kubernetes-node-e2e-containerd 1459005705993326592 1458945943599583232
pull-kubernetes-typecheck 1459005706060435456 1458945943670886400
pull-kubernetes-unit 1459005705968160768 1458945943570223104
pull-kubernetes-verify 1459005707448750080 1458945945063395328
pull-kubernetes-verify-govet-levee 1459005706601500672 1458945944228728832