Decommission sliding sync proxy

Signed-off-by: wj25czxj47bu6q <96372288+wj25czxj47bu6q@users.noreply.github.com>

srv/Matrix-Docker-Compose/docker-compose.yml

@@ -70,24 +70,6 @@ services:
     cap_drop:
       - ALL
 
-  syncv3:
-    image: ghcr.io/matrix-org/sliding-sync:latest
-    container_name: syncv3
-    restart: unless-stopped
-    env_file: ./syncv3.env
-    volumes:
-      - /var/run/postgresql:/var/run/postgresql:ro
-    group_add:
-      - "1006" # postgres-socket, https://github.com/docker/compose/issues/7277
-    runtime: "runsc-kvm --host-uds=open"
-    ports:
-      - "127.0.0.1:8008:8008"
-    read_only: true
-    security_opt:
-      - no-new-privileges:true
-    cap_drop:
-      - ALL
-
   glassrom-pantalaimon:
     image: matrixdotorg/pantalaimon:latest
     container_name: glassrom-pantalaimon