tf-m-lava-submit: get rid of DOCKER_PREFIX and LICENSE_VARIABLE as params

These environment variables are instance specific and should be set
using one of the following method:
 1. docker image (ENV)
 2. Jenkins -> configure system -> global properties -> environment variables

As global properties, it will override docker image ENV.

Note: this changes depends on
      https://review.trustedfirmware.org/c/ci/dockerfiles/+/6914

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Change-Id: I4c3d8b717d612b61866917b7a1cafaa058ec1c92
1 file changed