Remove ephelper and other endpoints code.

appengine/ephelper/middleware.go

Index: appengine/ephelper/middleware.go
diff --git a/appengine/ephelper/middleware.go b/appengine/ephelper/middleware.go
deleted file mode 100644
index 4e2bbe11f4fa0032f17764bb48fea759c0992145..0000000000000000000000000000000000000000
--- a/appengine/ephelper/middleware.go
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright 2015 The Chromium 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 ephelper
-
-import (
-	"github.com/GoogleCloudPlatform/go-endpoints/endpoints"
-	gaeauth "github.com/luci/luci-go/appengine/gaeauth/server"
-	"github.com/luci/luci-go/appengine/gaemiddleware"
-	"github.com/luci/luci-go/server/auth"
-	"golang.org/x/net/context"
-)
-
-// Middleware is a Context manipulation function that is called when
-// initializing a ServiceBase.
-type Middleware func(context.Context) (context.Context, error)
-
-// TestMode is a no-op middleware layer.
-var TestMode = []Middleware{}
-
-// DefaultMiddleware is the default middleware stack for a ServiceBase. It:
-//
-//   - Installs the AppEngine production service base from
-//     gaemiddleware.WithProd.
-//   - Installs and authenticates the using the Authenticator methods from the
-//     ServiceBase.
-func DefaultMiddleware(a auth.Authenticator) Middleware {
-	return func(c context.Context) (context.Context, error) {
-		c = gaemiddleware.WithProd(c, endpoints.HTTPRequest(c))
-
-		a := a
-		if a == nil {
-			mi := MethodInfo(c)
-			a = auth.Authenticator{
-				&gaeauth.OAuth2Method{Scopes: mi.Scopes},
-			}
-		}
-		c = auth.SetAuthenticator(c, a)
-		return a.Authenticate(c, endpoints.HTTPRequest(c))
-	}
-}