CI fits well on 16GB RAM instance just fine and only runs a few minutes longer.
Overall 32GB instances have shown to be stable. In currenct situation of lack
of resources this patch removes job which runs on 32GB instances. Identical job
continues to run on 16GB instances.
Change-Id: I0681894a6d8cee22048febe21152a03c47ac7ede
041dcdb82c