Remove networking-l2gw jobs
These jobs have been moved in-tree.
Depends-On:
- project:
name: openstack/networking-l2gw
templates:
- - check-requirements
- - openstack-python-jobs-neutron
- - openstack-python35-jobs-neutron
- publish-to-pypi
- - publish-openstack-sphinx-docs
check:
queue: networking-l2gw
gate:
