remove constraints on docker service placement

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

@@ -33,10 +33,6 @@ services:
         target: /data
         volume:
           nocopy: true
-    deploy:
-      placement:
-        constraints:
-          - "node.labels.mastodon == true"
 
   web:
     image: tootsuite/mastodon:v4.1
@@ -69,9 +65,6 @@ services:
         volume:
           nocopy: true
     deploy:
-      placement:
-        constraints:
-          - "node.labels.mastodon == true"
       labels:
         - traefik.enable=true
         - traefik.http.routers.mastodon.entrypoints=websecure
@@ -101,9 +94,6 @@ services:
       # prettier-ignore
       test: ['CMD-SHELL', 'wget -q --spider --proxy=off localhost:4000/api/v1/streaming/health || exit 1']
     deploy:
-      placement:
-        constraints:
-          - "node.labels.mastodon == true"
       labels:
         - traefik.enable=true
         - traefik.http.routers.mastodon-streaming.entrypoints=websecure
@@ -137,9 +127,5 @@ services:
           nocopy: true
     healthcheck:
       test: ['CMD-SHELL', "ps aux | grep '[s]idekiq\ 6' || false"]
-    deploy:
-      placement:
-        constraints:
-          - "node.labels.mastodon == true"
     depends_on:
       - redis