remove update_client::Configurator::StepDelay

ios/chrome/browser/component_updater/ios_component_updater_configurator.cc

Index: ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
diff --git a/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc b/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
index 9213e9b8adc8ce29cb76920a52ea4329d82b5226..84baa7bd97584baed5585647cabfce928fa1b330 100644
--- a/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
+++ b/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
@@ -29,7 +29,6 @@ class IOSConfigurator : public update_client::Configurator {
   // update_client::Configurator overrides.
   int InitialDelay() const override;
   int NextCheckDelay() const override;
-  int StepDelay() const override;
   int OnDemandDelay() const override;
   int UpdateDelay() const override;
   std::vector<GURL> UpdateUrl() const override;
@@ -78,10 +77,6 @@ int IOSConfigurator::NextCheckDelay() const {
   return configurator_impl_.NextCheckDelay();
 }
 
-int IOSConfigurator::StepDelay() const {
-  return configurator_impl_.StepDelay();
-}
-
 int IOSConfigurator::OnDemandDelay() const {
   return configurator_impl_.OnDemandDelay();
 }