Remove ephelper and other endpoints code.

appengine/ephelper/epfrontend/util_test.go

-// 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 epfrontend
-
-import (
-        "fmt"
-        "testing"
-
-        . "github.com/smartystreets/goconvey/convey"
-)
-
-func TestSafeURLPathJoin(t *testing.T) {
-        Convey(`Testing safeURLPathJoin`, t, func() {
-                for _, e := range []struct {
-                        parts []string
-                        value string
-                }{
-                        {[]string{"foo", "bar", "baz"}, "foo/bar/baz"},
-                        {[]string{"", "foo", "bar", "baz", ""}, "/foo/bar/baz/"},
-                        {[]string{"/", "/foo/", "/bar/", "//baz///"}, "/foo/bar/baz"},
-                        {[]string{""}, ""},
-                } {
-                        Convey(fmt.Sprintf(`URL parts %v resolve to %q.`, e.parts, e.value), func() {
-                                So(safeURLPathJoin(e.parts...), ShouldEqual, e.value)
-                        })
-                }
-        })
-}