Remove duplicate check for array parameters type in ClassMethod

PHP is an awful language in some places

We controll array type by ARG macros

```php
function test(array $a) {
return $a;
}
test(1);
```

Catchable fatal error: Argument 1 passed to test() must be of the type array, integer given

I dont know how to test array type...

I remove our manual type check because It's already checked