Code refactor work. New optimised query to get invoice status summary for an account

app/Models/Service/Broadband.php

@@ -20,10 +20,6 @@ class Broadband extends Type implements ServiceUsage
 {
 	private const LOGKEY = 'MSB';
 
-	protected $casts = [
-		'connect_at'=>'datetime:Y-m-d',
-		'expire_at'=>'datetime:Y-m-d',
-	];
 	protected $table = 'service_broadband';
 
 	/* INTERFACES */