Remove environment variables for repository license and links path (elastic#1814)

Author: jsoriano

.buildkite/pipeline.serverless.yml

@@ -10,10 +10,6 @@ env:
   # Elastic package settings
   # Manage docker output/logs
   ELASTIC_PACKAGE_COMPOSE_DISABLE_VERBOSE_OUTPUT: "true"
-  # Default license to use by `elastic-package build`
-  ELASTIC_PACKAGE_REPOSITORY_LICENSE: "licenses/Elastic-2.0.txt"
-  # Link definitions path (full path to be set in the corresponding step)
-  ELASTIC_PACKAGE_LINKS_FILE_PATH: "links_table.yml"
   # Disable comparison of results in pipeline tests to avoid errors related to GeoIP fields
   ELASTIC_PACKAGE_SERVERLESS_PIPELINE_TEST_DISABLE_COMPARE_RESULTS: "true"