Milo Refactor: Remove theme support

milo/appengine/settings/html_data.go

-// Copyright 2016 The LUCI Authors. All rights reserved.
-// Use of this source code is governed under the Apache License, Version 2.0
-// that can be found in the LICENSE file.
-
-package settings
-
-import (
-        "github.com/luci/luci-go/milo/api/resp"
-        "github.com/luci/luci-go/server/templates"
-)
-
-// TestableSettings is a subclass of Settings that interfaces with
-// TestableHandler and includes sample test data.
-type TestableSettings struct{ Settings }
-
-// TestData returns sample test data.
-func (s TestableSettings) TestData() []TestBundle {
-        return []TestBundle{
-                {
-                        Description: "Settings",
-                        Data: templates.Args{
-                                "Settings": &resp.Settings{
-                                        ActionURL: "/post/action",
-                                        Theme: &resp.Choices{
-                                                Choices:  GetAllThemes(),
-                                                Selected: "bootstrap",
-                                        },
-                                },
-                                "XsrfToken": "thisisatoken",
-                        },
-                },
-        }
-}