Remove the alertify error message as no need to show it when the user presses

the keyboard shortcut to open the View/Edit data on unsupported nodes.

refs #6206

web/pgadmin/tools/datagrid/static/js/show_data.js

@@ -45,7 +45,6 @@ export function showDataGrid(
 
   let applicable_nodes = ['table', 'view', 'mview', 'foreign_table'];
   if (applicable_nodes.indexOf(node.getData()._type) === -1) {
-    alertify.error(gettext('This feature is not applicable to the selected object.'));
     return;
   }