001: unused switch statement

file: `src/reducers/posts_reducer.js`

```
  switch (action.type) {
    case FETCH_POSTS:
      return action.payload;
    // case CREATE_POST:
    //   return { ...state, ...action.payload };
    // case DELETE_POST:
    //   return _.omit(state, action.payload);
  }
```

even if i comment this two cases the 001 - Redux & Firebase app will still work..
