Added translation for delete confirm popup box

Author: yogeshsuhagiya

app/code/Magento/Integration/view/adminhtml/templates/integration/popup_container.phtml

@@ -33,8 +33,8 @@
             $('div#integrationGrid').on('click', 'button#delete', function (e) {
 
                 new Confirm({
-                    title: 'Are you sure?',
-                    content: "Are you sure you want to delete this integration? You can't undo this action.",
+                    title: '<?= /* @escapeNotVerified */ __('Are you sure?') ?>',
+                    content: "<?= /* @escapeNotVerified */ __("Are you sure you want to delete this integration? You can't undo this action.") ?>",
                     actions: {
                         confirm: function () {
                             window.location.href = $(e.target).data('url');