MC-5372: Collage Center/Left/Right doesn't work correct in a container smaller than 100% width

 - remove unnecessary steps

Author: cspruiell

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderBannerPosterAppearanceTest.xml

@@ -1853,7 +1853,6 @@
         <!-- Validate Storefront -->
         <comment userInput="Validate Storefront" stepKey="commentValidateStorefront"/>
         <actionGroup ref="saveAndContinueEditCmsPage" stepKey="saveAndContinueEditCmsPage"/>
-        <openNewTab stepKey="openNewTab"/>
         <actionGroup ref="navigateToStoreFront" stepKey="navigateToStoreFront">
             <argument name="contentType" value="PageBuilderBannerContentType"/>
         </actionGroup>

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderSlideItemAppearancePosterTests.xml

@@ -1574,7 +1574,6 @@
         <!-- Validate Storefront -->
         <comment userInput="Validate Storefront" stepKey="commentValidateStorefront"/>
         <actionGroup ref="saveAndContinueEditCmsPage" stepKey="saveAndContinueEditCmsPage"/>
-        <openNewTab stepKey="openNewTab"/>
         <actionGroup ref="navigateToStoreFront" stepKey="navigateToStoreFront">
             <argument name="contentType" value="PageBuilderSliderContentType"/>
         </actionGroup>