remove constraints on docker service placement

ansible/roles/jitsi/docker-stack.yml.j2

@@ -21,9 +21,6 @@ services:
       - jitsi
       - traefik
     deploy:
-      placement:
-        constraints:
-          - "node.labels.public == true"
       labels:
         - traefik.enable=true
         - traefik.http.routers.jitsi-web.entrypoints=websecure
@@ -57,10 +54,6 @@ services:
       jitsi:
         aliases:
           - xmpp.meet.jitsi
-    deploy:
-      placement:
-        constraints:
-          - "node.labels.public == true"
 
   jicofo:
     image: jitsi/jicofo:stable-8218
@@ -74,10 +67,6 @@ services:
       - prosody
     networks:
       - jitsi
-    deploy:
-      placement:
-        constraints:
-          - "node.labels.public == true"
 
   jvb:
     image: jitsi/jvb:stable-8218
@@ -96,7 +85,3 @@ services:
     networks:
       - jitsi
       - traefik
-    deploy:
-      placement:
-        constraints:
-          - "node.labels.public == true"