Delete these 2 files vc_message.php,vc_messagebox.php from hopes/page_builder/add_ons/vc_message.php,vc_messagebox.php and next open shortcode_addons.php in page_builder/add_ons folder and remove the Message Box array from shortcode_addons.php file which is there around line no:420.
/**
* Message Box
*/
$attributes = array(
'type' => 'checkbox',
'heading' => 'Close',
'param_name' => 'close',
'description' => 'Check if you want to display the close button in the front end',
'value' => array( __( 'Yes, please', 'hopes-textdomain' ) => 'yes' ),
'class' => '',
);
vc_add_param('vc_message', $attributes);
