diff --git a/internal/keystore/azure/client.go b/internal/keystore/azure/client.go
index c5c36c39..b7d84091 100644
--- a/internal/keystore/azure/client.go
+++ b/internal/keystore/azure/client.go
@@ -11,7 +11,6 @@ import (
 	"math"
 	"net/http"
 	"path"
-	"strings"
 	"time"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets"
@@ -234,25 +233,3 @@ func (c *client) GetFirstVersion(ctx context.Context, name string) (string, stat
 		Message:    fmt.Sprintf("There are no versions of %q.", name),
 	}, nil
 }
-
-// endpoint returns an endpoint URL starting with the
-// given endpoint followed by the path elements.
-//
-// For example:
-//   - endpoint("https://127.0.0.1:7373", "version")                => "https://127.0.0.1:7373/version"
-//   - endpoint("https://127.0.0.1:7373/", "/key/create", "my-key") => "https://127.0.0.1:7373/key/create/my-key"
-//
-// Any leading or trailing whitespaces are removed from
-// the endpoint before it is concatenated with the path
-// elements.
-//
-// The path elements will not be URL-escaped.
-func endpoint(endpoint string, elems ...string) string {
-	endpoint = strings.TrimSpace(endpoint)
-	endpoint = strings.TrimSuffix(endpoint, "/")
-
-	if len(elems) > 0 && !strings.HasPrefix(elems[0], "/") {
-		endpoint += "/"
-	}
-	return endpoint + path.Join(elems...)
-}