Use native pip for container-check installation

We already install python2-pip on undercloud host and we
donot need extra task to again install pip for the same.

And easy_install module is not longer available with
python2 leading to failure of tasks unnecessary.

Removing it fixes the issues.

Tested here:
https://review.rdoproject.org/r/c/testproject/+/33649

Closes-Bug: #1927736

Signed-off-by: Chandan Kumar (raukadah) <chkumar@redhat.com>
Change-Id: Iee8f19ed9cc7a2e0fbf9f82b4c32fc4f8bd4c525

roles/overcloud-prep-containers/tasks/overcloud-prep-containers.yml

@@ -2,41 +2,6 @@
 - when: update_containers|bool
   block:
 
-    - name: ensure_pip on py2 systems
-      when: ansible_python.version.major == 2
-      block:
-
-        - command: "{{ python_cmd }} -m pip --version"
-          register: have_pip
-          changed_when: false
-          failed_when: false
-
-        - when: have_pip.rc != 0
-          become: true
-          block:
-
-            - name: check if python setup tool is installed
-              shell: "{{ python_cmd }} -m easy_install --version"
-              register: easy_install_exists
-              changed_when: false
-              failed_when: false
-
-            - name: Install python setuptools (easy_install)
-              when: easy_install_exists.rc != 0
-              # noqa 403
-              package:
-                state: latest
-                name:
-                  - python2-setuptools
-                  # python2-setuptools deprecates python-setuptools the former
-                  # one being too old to be usable. included in openstack distro.
-
-            - name: easy-install pip
-              shell: |-
-                "{{ python_cmd }} -m easy_install pip"
-                "{{ python_cmd }} -m pip install pip==20.3.4"
-              changed_when: true
-
     - name: Update pip
       # noqa 403
       pip: