Duplicate specification of `newLineCharacter` in RefactorContext

**TypeScript Version:**  master

**Code**

In `convertFunctionToEs6Class.ts`:

```ts
context.rulesProvider.getFormatOptions().newLineCharacter;
```

`RefactorContext` already specifies a `newLineCharacter` direct property; it looks like there are two ways of specifying this that might conflict. @RyanCavanaugh 