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
diff --git a/tf-m-lava-submit.yaml b/tf-m-lava-submit.yaml
index 13d9f1d..1a72b8b 100644
--- a/tf-m-lava-submit.yaml
+++ b/tf-m-lava-submit.yaml
@@ -30,6 +30,10 @@
             - job-extended-read
             - job-build
             - job-cancel
+# Instance specific parameters can be set as environment variables in
+# * docker image (ENV)
+# * Jenkins -> configure system -> global properties -> environment variables
+# e.g. DOCKER_PREFIX, LICENSE_VARIABLE
     parameters:
       - string:
           name: 'TARGET_PLATFORM'
@@ -96,12 +100,6 @@
           name: 'LAVA_URL'
           default: 'https://tf.validation.linaro.org'
       - string:
-          name: 'DOCKER_PREFIX'
-          default: '987685672616.dkr.ecr.us-east-1.amazonaws.com'
-      - string:
-          name: 'LICENSE_VARIABLE'
-          default: 'ARMLMD_LICENSE_FILE=27000@ci.trustedfirmware.org'
-      - string:
           name: 'PSA_API_SUITE'
           default: ''
       - string: