ci: Drop debian strech

This used the same build script as ubuntu 16.04 and is now broken. Remove it also.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>t
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

.travis.yml

@@ -18,7 +18,6 @@ env:
       - RUN_ON_CONTAINER=centos7
       - RUN_ON_CONTAINER=fedora32
       - RUN_ON_CONTAINER=fedora-rawhide
-      - RUN_ON_CONTAINER=debian-stretch
       - RUN_ON_CONTAINER=debian-unstable
       - RUN_ON_CONTAINER=docs
 

opal-ci/build-debian-stretch.sh

-build-ubuntu-16.04.sh
\ No newline at end of file