Data Deleted by Checkbox

<input type="checkbox" name="vschbox[]" value="<?php echo $post_id; ?>">
<input type="submit" name="delete" id="sufk" class="button action" value="Deleted">
  <?php 
]
global $wpdb;
if(isset($_GET['delete'])){
    $checkbox = $_GET['vschbox'];
    for($i=0;$i<count($checkbox);$i++){
        $del_id = $checkbox[$i]; 

         $wpdb->query( 
            "DELETE FROM wp_posts
             WHERE id IN($del_id)
            "       
        );

        $message = "Data deleted successfully !";
    }
} ?>