diff --git a/line/line.go b/line/line.go
deleted file mode 100644
index 1c6892de..00000000
--- a/line/line.go
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package line provides constants for using OAuth2 to access LINE.
-package line // import "golang.org/x/oauth2/line"
-
-import (
-	"golang.org/x/oauth2"
-)
-
-// Endpoint is LINE's OAuth 2.0 endpoint.
-var Endpoint = oauth2.Endpoint{
-	AuthURL:  "https://access.line.me/oauth2/v2.1/authorize",
-	TokenURL: "https://api.line.me/oauth2/v2.1/token",
-}