gnocchi: remove unexisting jobs
XXXX-upgrade-from-2.2 tox targets only exist in Gnocchi >=3.1.
This change removes the associated jobs on 3.0 branch.
@@ -3479,7 +3479,7 @@ jobs:
branch: ^(stable/(1\..|2\..|3.[01]))
- name: ^gate-gnocchi-tox-.+-upgrade-from-2.2-ubuntu-xenial
- branch: ^stable/3\.
+ branch: ^stable/3\.1$
- name: ^gate-gnocchi-tox-.+-upgrade-from-3.0-ubuntu-xenial
branch: ^stable/3\.1$
