Remove jobs for neutron-fwaas master branch

Neutron-fwaas is going to be deprecated in master branch with [1].

[1] https://review.opendev.org/#/c/735828/

Depends-On: https://review.opendev.org/#/c/735829/

Change-Id: I432523933a7f930932fd2fd7d25b948b02f275f5
4 files changed