PSR2EmptyFunction removes lines between functions

I am unclear if this is intended behavior or not.

e.g.,

PSR2EmptyFunction disabled:

```php
function foo() {
}

function bar(int $baz, string $qux) {
    noop();
}
```

PSR2EmptyFunction enabled:

```php
function foo() {}
function bar(int $baz, string $qux) {
    noop();
}
```