MAGETWO-91697: [Magento Cloud] "Tier Pricing" of Products changes to "Price" (without discount) after Updated Items and Quantities

- Update automated test

Author: nikshostko

app/code/Magento/Catalog/Test/Mftf/ActionGroup/AdminProductActionGroup.xml

@@ -194,7 +194,6 @@
             <argument name="amount" type="string" defaultValue="45"/>
         </arguments>
         <click selector="{{AdminProductFormSection.advancedPricingLink}}" stepKey="clickOnAdvancedPricingButton"/>
-        <maximizeWindow stepKey="maximizeWindow"/>
         <waitForElement selector="{{AdminProductFormAdvancedPricingSection.customerGroupPriceAddButton}}" stepKey="waitForCustomerGroupPriceAddButton"/>
         <click selector="{{AdminProductFormAdvancedPricingSection.customerGroupPriceAddButton}}" stepKey="addCustomerGroupAllGroupsQty1PriceDiscountAnd10percent"/>
         <waitForElement selector="{{AdminProductFormAdvancedPricingSection.productTierPriceCustGroupSelect('0')}}" stepKey="waitForSelectCustomerGroupNameAttribute2"/>