MAGETWO-90591: Add Selected Button shouldn't be enabled if there are no images available

Author: Joan He

app/code/Magento/Catalog/Test/Mftf/Test/AdminAddImageToWYSIWYGProductTest.xml

@@ -39,7 +39,6 @@
         <waitForLoadingMaskToDisappear stepKey="waitForLoading2" />
         <see selector="{{ProductDescriptionWYSIWYGToolbarSection.CancelBtn}}" userInput="Cancel" stepKey="seeCancelBtn1" />
         <see selector="{{ProductDescriptionWYSIWYGToolbarSection.CreateFolder}}" userInput="Create Folder" stepKey="seeCreateFolderBtn1" />
-        <see selector="{{ProductDescriptionWYSIWYGToolbarSection.InsertFile}}" userInput="Add Selected" stepKey="seeAddSelectedBtn1" />
         <click selector="{{ProductDescriptionWYSIWYGToolbarSection.CreateFolder}}" stepKey="createFolder1"/>
         <waitForElementVisible selector="{{ProductDescriptionWYSIWYGToolbarSection.FolderName}}" stepKey="waitForPopUp1" />
         <fillField selector="{{ProductDescriptionWYSIWYGToolbarSection.FolderName}}" userInput="{{ImageFolder.name}}" stepKey="fillFolderName1" />
@@ -78,7 +77,6 @@
         <waitForLoadingMaskToDisappear stepKey="waitForLoading8" />
         <see selector="{{ProductShortDescriptionWYSIWYGToolbarSection.CancelBtn}}" userInput="Cancel" stepKey="seeCancelBtn2" />
         <see selector="{{ProductShortDescriptionWYSIWYGToolbarSection.CreateFolder}}" userInput="Create Folder" stepKey="seeCreateFolderBtn2" />
-        <see selector="{{ProductShortDescriptionWYSIWYGToolbarSection.InsertFile}}" userInput="Add Selected" stepKey="seeAddSelectedBtn2" />
         <attachFile selector="{{ProductShortDescriptionWYSIWYGToolbarSection.BrowseUploadImage}}" userInput="{{ImageUpload3.value}}" stepKey="uploadImage3"/>
         <waitForElementVisible  selector="{{ProductShortDescriptionWYSIWYGToolbarSection.image(ImageUpload3.value)}}" stepKey="waitForUploadImage3" />
         <waitForLoadingMaskToDisappear stepKey="waitForLoading9" />