fix staticcheck in pkg/printers

Author: tanjunchen

hack/.staticcheck_failures

@@ -18,7 +18,6 @@ pkg/kubelet/cm/devicemanager
 pkg/kubelet/pluginmanager/operationexecutor
 pkg/kubelet/pluginmanager/pluginwatcher
 pkg/kubelet/remote
-pkg/printers
 pkg/probe/http
 pkg/proxy/healthcheck
 pkg/proxy/iptables

pkg/printers/tablegenerator.go

@@ -45,7 +45,6 @@ type PrintHandler interface {
 type handlerEntry struct {
 	columnDefinitions []metav1.TableColumnDefinition
 	printFunc         reflect.Value
-	args              []reflect.Value
 }
 
 // HumanReadableGenerator is an implementation of TableGenerator used to generate
@@ -160,7 +159,7 @@ func ValidateRowPrintHandlerFunc(printFunc reflect.Value) error {
 	funcType := printFunc.Type()
 	if funcType.NumIn() != 2 || funcType.NumOut() != 2 {
 		return fmt.Errorf("invalid print handler." +
-			"Must accept 2 parameters and return 2 value.")
+			"Must accept 2 parameters and return 2 value")
 	}
 	if funcType.In(1) != reflect.TypeOf((*GenerateOptions)(nil)).Elem() ||
 		funcType.Out(0) != reflect.TypeOf((*[]metav1.TableRow)(nil)).Elem() ||