Remove disable-policy-key-verification command line flag

components/policy/core/common/policy_switches.cc

 // Copyright 2013 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.
 
 #include "components/policy/core/common/policy_switches.h"
 
 namespace policy {
 namespace switches {
 
 // Specifies the URL at which to fetch configuration policy from the device
 // management backend.
 const char kDeviceManagementUrl[]           = "device-management-url";
 
 // Disables fetching and storing cloud policy for components.
 const char kDisableComponentCloudPolicy[]   = "disable-component-cloud-policy";
 
-// Disables the verification of policy signing keys.
-// TODO(atwilson): Remove this once all test servers have been updated to
-// produce verification signatures.
-const char kDisablePolicyKeyVerification[]  = "disable-policy-key-verification";
-
 // Always treat user as affiliated.
 // TODO(antrim): Remove once test servers correctly produce affiliation ids.
 const char kUserAlwaysAffiliated[]  = "user-always-affiliated";
 
 }  // namespace switches
 }  // namespace policy