Fixup style based on lint output

pkg/apis/api.go

@@ -77,13 +77,10 @@ func sendAlert(req *restful.Request, resp *restful.Response) {
 		resp.WriteHeader(200)
 		log.Infof("send msg successful")
 	}
-
-	return
 }
 
 func reportLiveness(req *restful.Request, resp *restful.Response) {
 	resp.WriteHeader(200)
-	return
 }
 
 func reportState(req *restful.Request, resp *restful.Response) {

pkg/options/option.go

@@ -1,7 +1,6 @@
 package options
 
 import (
-	"errors"
 	"fmt"
 	"path/filepath"
 	"strings"
@@ -18,8 +17,6 @@ import (
 	"github.com/rancher/webhook-receiver/pkg/providers/msteams"
 )
 
-const logLevelErr = "set log level error, support Info,Error"
-
 var (
 	mut       sync.RWMutex
 	receivers map[string]providers.Receiver
@@ -145,24 +142,10 @@ func getProviderCreator(name string) (providers.Creator, error) {
 	case msteams.Name:
 		return msteams.New, nil
 	default:
-		return nil, errors.New(fmt.Sprintf("provider %s is not support", name))
+		return nil, fmt.Errorf("provider %s is not support", name)
 	}
 }
 
-type option struct {
-	Providers map[string]map[string]string
-	Receivers []providers.Receiver
-}
-
-func newOption(data []byte) (option, error) {
-	opt := option{}
-	if err := yaml.Unmarshal(data, &opt); err != nil {
-		return option{}, err
-	}
-
-	return opt, nil
-}
-
 func convertInterfaceToStruct(inter interface{}, s interface{}) error {
 	byteData, err := yaml.Marshal(inter)
 	if err != nil {