This reverts part of f7e1a9bacb
because it's causing the error below. Once we figure out the cause we'll
reintroduce this bugfix. This leaves the new get_aliases method in mozdef_util
in place as it's fine (though we're not actually calling it for some reason)
```
Connecting to http://elasticsearch:9200
Traceback (most recent call last):
File "initial_setup.py", line 61, in <module>
'events,events-previous,alerts,events-weekly')
File "/opt/mozdef/envs/python/lib/python2.7/site-packages/elasticsearch/client/utils.py", line 73, in _wrapped
return func(*args, params=params, **kwargs)
File "/opt/mozdef/envs/python/lib/python2.7/site-packages/elasticsearch/client/indices.py", line 399, in get_alias
'_alias', name), params=params)
File "/opt/mozdef/envs/python/lib/python2.7/site-packages/elasticsearch/transport.py", line 312, in perform_request
status, headers, data = connection.perform_request(method, url, params, body, ignore=ignore, timeout=timeout)
File "/opt/mozdef/envs/python/lib/python2.7/site-packages/elasticsearch/connection/http_urllib3.py", line 129, in perform_request
self._raise_error(response.status, raw_data)
File "/opt/mozdef/envs/python/lib/python2.7/site-packages/elasticsearch/connection/base.py", line 125, in _raise_error
raise HTTP_EXCEPTIONS.get(status_code, TransportError)(status_code, error_message, additional_info)
elasticsearch.exceptions.NotFoundError: TransportError(404, u'index_not_found_exception', u'no such index')
```
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