message: Remove Access Token panel (for now).
diff: @@ -40,7 +40,7 @@ TSharedRef<SWidget> CesiumPanel::Toolbar() {
  commandList->MapAction(FCesiumCommands::Get().AddFromIon, FExecuteAction::CreateSP(this, &CesiumPanel::addFromIon), FCanExecuteAction::CreateStatic(isSignedIn));
  commandList->MapAction(FCesiumCommands::Get().UploadToIon, FExecuteAction::CreateSP(this, &CesiumPanel::uploadToIon), FCanExecuteAction::CreateStatic(isSignedIn));
  commandList->MapAction(FCesiumCommands::Get().AddBlankTileset, FExecuteAction::CreateSP(this, &CesiumPanel::addBlankTileset));
  - commandList->MapAction(FCesiumCommands::Get().AccessToken, FExecuteAction::CreateSP(this, &CesiumPanel::accessToken), FCanExecuteAction::CreateStatic(isSignedIn));
  + //commandList->MapAction(FCesiumCommands::Get().AccessToken, FExecuteAction::CreateSP(this, &CesiumPanel::accessToken), FCanExecuteAction::CreateStatic(isSignedIn));
  commandList->MapAction(FCesiumCommands::Get().SignOut, FExecuteAction::CreateSP(this, &CesiumPanel::signOut), FCanExecuteAction::CreateStatic(isSignedIn));
  FToolBarBuilder builder(commandList, FMultiBoxCustomization::None);
  @@ -48,7 +48,7 @@ TSharedRef<SWidget> CesiumPanel::Toolbar() {
  builder.AddToolBarButton(FCesiumCommands::Get().AddFromIon);
  builder.AddToolBarButton(FCesiumCommands::Get().UploadToIon);
  builder.AddToolBarButton(FCesiumCommands::Get().AddBlankTileset);
  - builder.AddToolBarButton(FCesiumCommands::Get().AccessToken);
  + //builder.AddToolBarButton(FCesiumCommands::Get().AccessToken);
  builder.AddToolBarButton(FCesiumCommands::Get().SignOut);
  return builder.MakeWidget();
  