Remove a site collection app catalog using CSOM

RemoveSiteCollectionAppCatalog.cs

var siteUrl = "https://<tenant-name>.sharepoint.com/sites/test"
using (ClientContext clientContext = new ClientContext(siteUrl))
{
    try
    {  
        // removes the site collection app catalog
        // do note- it will disable the app catalog and not hide it from the UI
        // this is a SharePoint thing, since App Catalog is basically a document library underneath
        clientContext.Web.TenantAppCatalog.SiteCollectionAppCatalogsSites.Remove(siteUrl);
        clientContext.ExecuteQueryRetry();
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.ToString());
    }
}