removed supporting code for testing module "nuage" - no longer exists here (#2559) (#2561)

(cherry picked from commit 452a185a23)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

tests/integration/targets/prepare_nuage_tests/tasks/main.yml

@@ -1,24 +0,0 @@
-####################################################################
-# WARNING: These are designed specifically for Ansible tests       #
-# and should not be used as examples of how to write Ansible roles #
-####################################################################
-
-- block:
-    - name: Install Nuage VSD API Simulator
-      pip:
-        name: nuage-vsd-sim
-
-    - name: Start Nuage VSD API Simulator
-      shell: "(cd /; nuage-vsd-sim >/dev/null 2>&1)"
-      async: 1800
-      poll: 0
-
-    - name: Wait for API to be ready
-      uri:
-        url: http://localhost:5000
-      register: api
-      delay: 3
-      retries: 10
-      until: api.status == 200
-
-  when: "ansible_python_version is version('2.7', '>=')"