Parenthesis removal #2 (https://github.com/fsprojects/fantomas/issues/684)

gistfile1.txt

Code:
```
match foo with
| Bar (baz) -> ()
| _ ->
    failwith "xxx"
```

Current results:
```
match foo with
| Bar (baz) -> ()
| _ -> failwith "xxx"
```

Expected results:
```
match foo with
| Bar baz -> ()
| _ -> failwith "xxx"
```