remove release-1.6 series jobs

Remove release-1.6 series jobs from jjb.

Signed-off-by: Tuomo Tanskanen <tuomo.tanskanen@est.tech>
Change-Id: If186a53482fc9679d860bbf7ae94ad0eb2d48012
2 files changed
tree: af8a24b48498490276c01eb71b4f532e88a1075a
  1. jjb/
  2. .gitignore
  3. .gitreview
  4. .yamllint
  5. tox.ini