drop tripleo-common-tempest-plugin

This is not needed plugin without any branches or releases. And wants Python 3
while we have Py2 for CentOS 7.

Change-Id: I9cab91b82941ea125b16d19e68722ce41a1f11f2
14:41 < hrw> is  tripleo-common-tempest-plugin your stuff?
14:43 <@EmilienM> yes and it does nothing. I thought we removed that?
14:43 <@EmilienM> apparently it's still here https://github.com/openstack/tripleo-common-tempest-plugin
14:43 <@EmilienM> we should burn it, weshay|ruck ^
14:44 < hrw> EmilienM: also fine to drop from train?
14:44 <@EmilienM> burn it everywhere you can
14:44 < hrw> THANKS
14:44 <@EmilienM> it has never been useful
14:44 <@EmilienM> and people who started it left
14:48 <@WesHay|ruck> EmilienM, yup

Author: hrw

kolla/common/config.py

@@ -749,10 +749,6 @@
         'type': 'url',
         'location': ('$tarballs_base/telemetry-tempest-plugin/'
                      'telemetry_tempest_plugin-0.3.0.tar.gz')},
-    'tempest-plugin-tripleo-common': {
-        'type': 'url',
-        'location': ('$tarballs_base/tripleo-common-tempest-plugin/'
-                     'tripleo-common-tempest-plugin-master.tar.gz')},
     'tempest-plugin-trove': {
         'type': 'url',
         'location': ('$tarballs_base/trove-tempest-plugin/'