Remove OSRM healthcheck — image has no curl/wget/nc

The osrm-backend image is too minimal to run any health probe.
Drop the healthcheck entirely and use a plain depends_on so the
shop starts after OSRM, without blocking on a health condition
that can never pass.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -8,12 +8,6 @@ services:
     volumes:
       - ./docker/osrm/data:/data
     command: osrm-routed --algorithm mld /data/connecticut-latest.osrm
-    healthcheck:
-      test: ["CMD-SHELL", "curl -sf http://localhost:5000/ || exit 1"]
-      interval: 15s
-      timeout: 5s
-      retries: 5
-      start_period: 30s
 
   balloons-shop:
     build: .
@@ -24,8 +18,7 @@ services:
       - .env
     restart: unless-stopped
     depends_on:
-      osrm:
-        condition: service_healthy
+      - osrm
     healthcheck:
       test: ["CMD", "wget", "-qO-", "http://localhost:3000/api/catalog"]
       interval: 30s