chore: remove six (from code) (#1215)

- Removed use of `six' from source (test) code and third party notice re: distributed code
- However, `six` is retained in `requirements_test.txt` due to a bug in `azure-iot-hub`. This should be removed as a follow-up

Author: cartertinney

dev_utils/dev_utils/service_helper_sync.py

@@ -3,7 +3,7 @@
 # full license information.
 import logging
 import threading
-from six.moves import queue
+import queue
 import copy
 import time
 import uuid

requirements_test.txt

@@ -9,4 +9,4 @@ azure-iot-hub                                    # Only needed for iothub e2e
 azure-iothub-provisioningserviceclient >= 1.2.0  # Only needed for provisioning e2e
 azure-eventhub                                   # Only needed for iothub e2e
 psutil                                           # Only needed for iothub e2e
-six                                              # Only needed for tests and should be removed ASAP a python2 backcompat should not be needed anymore.
+six                                              # Needed due to a missing dependency in azure-iot-hub

tests/e2e/iothub_e2e/device_identity_helper.py

@@ -7,7 +7,7 @@
 from azure.iot.hub import IoTHubRegistryManager
 from base64 import b64encode, b64decode
 from hashlib import sha256
-from six.moves.urllib import parse
+from urllib import parse
 from hmac import HMAC
 
 

thirdpartynotice.txt

@@ -33,28 +33,6 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
-2.) License Notice for six from https://raw.githubusercontent.com/benjaminp/six/master/LICENSE
------------------------------------------------------------------------------------------------------------------------
-
-Copyright (c) 2010-2019 Benjamin Peterson
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
 3.) License Notice for paho-mqtt from https://raw.githubusercontent.com/PyCQA/astroid/master/COPYING
 -----------------------------------------------------------------------------------------------------------------------