Remove some unused proxy args/fields

Remove the utilexec.Interface args from the iptables/ipvs constructors
(which have been unused since the conntrack cleanup code was ported to
netlink).

Remove the EventRecorder fields from the iptables/ipvs Proxiers, which
have been unused since we removed the port-opener code in 2022.

Remove the strictARP field from the ipvs Proxier, which has apparently
always been unused (strictARP is only looked at at construct time).

pkg/proxy/iptables/proxier.go

@@ -54,7 +54,6 @@ import (
 	"k8s.io/kubernetes/pkg/proxy/util/nfacct"
 	"k8s.io/kubernetes/pkg/util/async"
 	utiliptables "k8s.io/kubernetes/pkg/util/iptables"
-	utilexec "k8s.io/utils/exec"
 )
 
 const (
@@ -101,7 +100,6 @@ func NewDualStackProxier(
 	ctx context.Context,
 	ipt [2]utiliptables.Interface,
 	sysctl utilsysctl.Interface,
-	exec utilexec.Interface,
 	syncPeriod time.Duration,
 	minSyncPeriod time.Duration,
 	masqueradeAll bool,
@@ -117,7 +115,7 @@ func NewDualStackProxier(
 ) (proxy.Provider, error) {
 	// Create an ipv4 instance of the single-stack proxier
 	ipv4Proxier, err := NewProxier(ctx, v1.IPv4Protocol, ipt[0], sysctl,
-		exec, syncPeriod, minSyncPeriod, masqueradeAll, localhostNodePorts, masqueradeBit,
+		syncPeriod, minSyncPeriod, masqueradeAll, localhostNodePorts, masqueradeBit,
 		localDetectors[v1.IPv4Protocol], hostname, nodeIPs[v1.IPv4Protocol],
 		recorder, healthzServer, nodePortAddresses, initOnly)
 	if err != nil {
@@ -125,7 +123,7 @@ func NewDualStackProxier(
 	}
 
 	ipv6Proxier, err := NewProxier(ctx, v1.IPv6Protocol, ipt[1], sysctl,
-		exec, syncPeriod, minSyncPeriod, masqueradeAll, false, masqueradeBit,
+		syncPeriod, minSyncPeriod, masqueradeAll, false, masqueradeBit,
 		localDetectors[v1.IPv6Protocol], hostname, nodeIPs[v1.IPv6Protocol],
 		recorder, healthzServer, nodePortAddresses, initOnly)
 	if err != nil {
@@ -175,7 +173,6 @@ type Proxier struct {
 	localDetector  proxyutil.LocalTrafficDetector
 	hostname       string
 	nodeIP         net.IP
-	recorder       events.EventRecorder
 
 	serviceHealthServer healthcheck.ServiceHealthServer
 	healthzServer       *healthcheck.ProxyHealthServer
@@ -230,7 +227,6 @@ func NewProxier(ctx context.Context,
 	ipFamily v1.IPFamily,
 	ipt utiliptables.Interface,
 	sysctl utilsysctl.Interface,
-	exec utilexec.Interface,
 	syncPeriod time.Duration,
 	minSyncPeriod time.Duration,
 	masqueradeAll bool,
@@ -300,7 +296,6 @@ func NewProxier(ctx context.Context,
 		localDetector:            localDetector,
 		hostname:                 hostname,
 		nodeIP:                   nodeIP,
-		recorder:                 recorder,
 		serviceHealthServer:      serviceHealthServer,
 		healthzServer:            healthzServer,
 		precomputedProbabilities: make([]string, 0, 1001),