##### SUMMARY
get_url contains call to Display.deprecated or AnsibleModule.deprecate and is scheduled for removal

```
lib/ansible/modules/net_tools/basics/get_url.py:478:12: ansible-deprecated-version: Deprecated version ('2.10') found in call to Display.deprecated or AnsibleModule.deprecate
```

##### ISSUE TYPE
 - Bug Report

##### COMPONENT NAME
```
lib/ansible/modules/net_tools/basics/get_url.py
```

##### ANSIBLE VERSION
```
2.10
```

##### CONFIGURATION
N/A

##### OS / ENVIRONMENT
N/A

##### STEPS TO REPRODUCE
N/A

##### EXPECTED RESULTS
N/A

##### ACTUAL RESULTS
N/A

backup = module.params['backup']
    force = module.params['force']
    sha256sum = module.params['sha256sum']
    checksum = module.params['checksum']
    use_proxy = module.params['use_proxy']
    timeout = module.params['timeout']
    tmp_dest = module.params['tmp_dest']
    result = dict(
        changed=False,
        checksum_dest=None,
        checksum_src=None,
        dest=dest,
        elapsed=0,
        url=url,
    )
    
    if isinstance(module.params['headers'], dict):
        headers = module.params['headers']
    elif module.params['headers']:
        try:
            headers = dict(item.split(':', 1) for item in module.params['headers'].split(','))
            module.deprecate('Supplying `headers` as a string is deprecated. Please use dict/hash format for `headers`', version='2.10')
        except Exception:
            module.fail_json(msg="The string representation for the `headers` parameter requires a key:value,key:value syntax to be properly parsed.", **result)
    else:
        headers = None
    dest_is_dir = os.path.isdir(dest)
    last_mod_time = None
    
    if sha256sum: