Update README.md

Co-authored-by: Louis Haftmann <30736553+LouisHaftmann@users.noreply.github.com>

Author: mhaeusler

README.md

@@ -17,7 +17,6 @@ services:
       - '3000:3000'
     environment:
       API_BASE_URL: http://localhost:3000
-      DEFAULT_ACTIONS_RESULTS_URL: https://results-receiver.actions.githubusercontent.com
       STORAGE_DRIVER: filesystem
       STORAGE_FILESYSTEM_PATH: /data/cache
       DB_DRIVER: sqlite