MC-5184: Missing validation message when uploading big image

- Remove empty line in image form

Author: Hwashiang Yu

app/code/Magento/PageBuilder/view/adminhtml/ui_component/pagebuilder_image_form.xml

@@ -99,7 +99,6 @@
                 <imageUploader>
                     <settings>
                         <allowedExtensions>jpg jpeg gif png</allowedExtensions>
-
                         <uploaderConfig>
                             <param xsi:type="string" name="url">pagebuilder/contenttype/image_upload</param>
                         </uploaderConfig>