cmd: fix linter errors

Fix errors reported by default golangci-lint linters

cmd/agola/cmd/orgmemberlist.go

@@ -37,8 +37,6 @@ var cmdOrgMemberList = &cobra.Command{
 
 type orgMemberListOptions struct {
 	orgname string
-	username string
-	role     string
 }
 
 var orgMemberListOpts orgMemberListOptions

cmd/agola/cmd/serve.go

@@ -102,15 +102,12 @@ func embeddedEtcd(ctx context.Context) error {
 	}
 
 	go func() {
-		select {
-		case <-e.Server.ReadyNotify():
+		<-e.Server.ReadyNotify()
 		log.Infof("embedded etcd server is ready")
-		}
-		select {
-		case <-ctx.Done():
+
+		<-ctx.Done()
 		log.Infof("stopping embedded etcd server")
 		e.Close()
-		}
 	}()
 
 	return nil