### Summary

The config option `options.display_skipped_hosts.env.0` should be removed from `lib/ansible/plugins/callback/default.py`. It was scheduled for removal in 2.12.

### Issue Type

Bug Report

### Component Name

`lib/ansible/plugins/callback/default.py`

### Ansible Version

2.14

### Configuration

N/A

### OS / Environment

N/A

### Steps to Reproduce

N/A

### Expected Results

N/A

### Actual Results

N/A
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
class ModuleDocFragment(object):