art: Move ListOutput under utils

pkg/github/releases.go

@@ -2,7 +2,6 @@ package github
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"log"
 	"net/http"
@@ -10,7 +9,6 @@ import (
 
 	"github.com/google/go-github/v40/github"
 	"golang.org/x/oauth2"
-	"gopkg.in/yaml.v1"
 )
 
 func newHTTPClient(ctx context.Context, token string) *http.Client {
@@ -49,19 +47,3 @@ func FindReleases(ctx context.Context, token, slug string) ([]string, error) {
 	}
 	return versions, nil
 }
-
-func ListOutput(rels []string, output string) []string {
-	switch strings.ToLower(output) {
-	case "yaml":
-		d, _ := yaml.Marshal(rels)
-		return []string{string(d)}
-	case "json":
-		d, _ := json.Marshal(rels)
-		return []string{string(d)}
-	default:
-		for _, r := range rels {
-			fmt.Println(r)
-		}
-		return rels
-	}
-}