Remove old test Python line

pica-db-backup/backup_env_var.py

@@ -37,7 +37,6 @@ if not(os.path.isfile(PATH_TO_CONFIG)):
 # Variables initialization
 open_config_file = open(PATH_TO_CONFIG)
 services_list = json.load(open_config_file)
-services_list = {k: os.environ.get(k, v) for k, v in olddata.items()}
 flag_mongo = False
 flag_mysql = False
 flag_postgres = False