Remove cryptography version limit in Azure tests.

No longer needed now that cryptography 2.1.1 has been released.

test/integration/targets/setup_azure/tasks/main.yml

@@ -1,8 +1,2 @@
-- name: install cryptography requirement
-  # preempt the installation of cryptography from requirements-azure.txt to limit the version installed
-  # requests[security] requires cryptography >= 1.3.4
-  # cryptography 2.1 requires pip 8.1.2+
-  command: pip install cryptography>=1.3.4,<2.1
-
 - pip:
     requirements: '{{ role_path }}/../../../../packaging/requirements/requirements-azure.txt'