jicofo: remove JICOFO_SHORT_ID (removed upstream)

docker-compose.yml

@@ -269,7 +269,6 @@ services:
             - JICOFO_CONF_INITIAL_PARTICIPANT_WAIT_TIMEOUT
             - JICOFO_CONF_SINGLE_PARTICIPANT_TIMEOUT
             - JICOFO_ENABLE_HEALTH_CHECKS
-            - JICOFO_SHORT_ID
             - JIBRI_BREWERY_MUC
             - JIBRI_REQUEST_RETRIES
             - JIBRI_PENDING_TIMEOUT

jicofo/rootfs/defaults/jicofo.conf

@@ -132,8 +132,6 @@ jicofo {
       // two MUST be in sync (otherwise bridges will crash because they won't know how to
       // deal with octo channels).
       enabled = {{ $ENABLE_OCTO }}
-
-      id = "{{ .Env.JICOFO_SHORT_ID | default "1" }}"
     }
 
     sctp {