MAGETWO-88791: StorefrontCustomerCheckoutTest failed on Jenkins randomly

Author: Joan He

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Customer/ActionGroup/LoginToStorefrontActionGroup.xml

@@ -15,6 +15,5 @@
         <fillField  stepKey="fillEmail" userInput="{{Customer.email}}" selector="{{StorefrontCustomerSignInFormSection.emailField}}"/>
         <fillField  stepKey="fillPassword" userInput="{{Customer.password}}" selector="{{StorefrontCustomerSignInFormSection.passwordField}}"/>
         <click stepKey="clickSignInAccountButton" selector="{{StorefrontCustomerSignInFormSection.signInAccountButton}}"/>
-        <waitForPageLoad stepKey="waitForPageLoad"/>
     </actionGroup>
 </actionGroups>