Drop the tempest-full py2 job

We have dropped the tempest-full from
Tempest gate and made this to run on py2
explicitly which is nothing but for stable gates.
- I75868d5c9b6630fe78958ff89e58a0aced09a6b3

This job is not supposed to run on ussuri onwards master
gate as everything will be python3-only.

Change-Id: I372bde6a1753884efaf15da5fab48f1bddb4dab5

Author: Ghanshyam Mann

.zuul.yaml

@@ -577,7 +577,6 @@
 
 - project:
     templates:
-      - integrated-gate
       - integrated-gate-py3
       - publish-openstack-docs-pti
     check: