revert changes

Author: Usik2203

app/code/Magento/Checkout/Test/Mftf/Test/StorefrontCheckoutWithDifferentShippingAndBillingAddressAndProductWithTierPricesTest.xml

@@ -65,7 +65,8 @@
 
         <!-- Fill the Estimate Shipping and Tax section -->
         <actionGroup ref="CheckoutFillEstimateShippingAndTaxActionGroup" stepKey="fillEstimateShippingAndTaxFields"/>
-        <actionGroup ref="StorefrontClickProceedToCheckoutActionGroup" stepKey="goToCheckout"/>
+        <click selector="{{CheckoutCartSummarySection.proceedToCheckout}}" stepKey="goToCheckout"/>
+        <waitForPageLoad stepKey="waitForPageToLoad"/>
 
         <!-- Fill the guest form -->
         <actionGroup ref="FillGuestCheckoutShippingAddressWithCountryActionGroup" stepKey="fillGuestForm">