Revert of Allow user to manually fetch remote commands (patchset #3 id:40001...

Revert of Allow user to manually fetch remote commands (patchset #3 id:40001 of https://codereview.chromium.org/1106193003/)

Reason for revert:
crash occasionally on CrOS

Original issue's description:
> Allow user to manually fetch remote commands
>
> Currently remote commands fetch depends solely on invalidation, evaluate and
> possibly remove this after invalidation service is landed and tested.
>
> BUG=480982
>
> Committed: https://crrev.com/610f47342c8d725e239513ac17727a176d161495
> Cr-Commit-Position: refs/heads/master@{#327765}

TBR=bartfab@chromium.org,estade@chromium.org
BUG=480982,486672

Review URL: https://codereview.chromium.org/1132223003

Cr-Commit-Position: refs/heads/master@{#329660}

chrome/browser/ui/webui/policy_ui.cc

@@ -36,7 +36,6 @@
 #include "components/policy/core/common/policy_namespace.h"
 #include "components/policy/core/common/policy_service.h"
 #include "components/policy/core/common/policy_types.h"
-#include "components/policy/core/common/remote_commands/remote_commands_service.h"
 #include "components/policy/core/common/schema.h"
 #include "components/policy/core/common/schema_map.h"
 #include "components/policy/core/common/schema_registry.h"
@@ -53,7 +52,6 @@
 #include "ui/base/l10n/time_format.h"
 
 #if defined(OS_CHROMEOS)
-#include "chrome/browser/browser_process_platform_part.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
@@ -809,18 +807,6 @@ void PolicyUIHandler::HandleInitialized(const base::ListValue* args) {
 }
 
 void PolicyUIHandler::HandleReloadPolicies(const base::ListValue* args) {
-#if defined(OS_CHROMEOS)
-  // Allow user to manually fetch remote commands, in case invalidation
-  // service is not working properly.
-  // TODO(binjin): evaluate and possibly remove this after invalidation
-  // service is landed and tested. http://crbug.com/480982
-  policy::BrowserPolicyConnectorChromeOS* connector =
-      g_browser_process->platform_part()->browser_policy_connector_chromeos();
-  connector->GetDeviceCloudPolicyManager()
-      ->core()
-      ->remote_commands_service()
-      ->FetchRemoteCommands();
-#endif
   GetPolicyService()->RefreshPolicies(
       base::Bind(&PolicyUIHandler::OnRefreshPoliciesDone,
                  weak_factory_.GetWeakPtr()));