Is there a way to cancel any condition in QueryBuilder (Laravel 5)?

Question

ORM

Suppose there is such a request At some point in time, before the moment of sampling from the database, it is necessary to cancel the condition on the user's age. Here's how to do it?
$query = DB::table('users')->whereAge(18);

Answer 1

I found the answer myself :)

foreach ((array) $query->wheres as $key => $where)
    {
        if ($where['column'] == 'age')
        {
            unset($query->wheres[$key]);

            $query->wheres = array_values($query->wheres);
        }
    }

Answer 2

$query = DB::table('users');
if(){
     //code
} else {
$query = $query->whereAge(18);
}
$query= $query->get();