refactor: remove deprecated YAML template files

- Deleted all 'template.yml' files from various blueprints as part of the transition to TOML format.
- Updated the script to delete the 'template.yml' files instead of converting them to 'template.toml'.

blueprints/immich/template.yml

@@ -1,26 +0,0 @@
-variables:
-  main_domain: ${domain}
-  db_password: ${password}
-  db_user: immich
-
-config:
-  domains:
-    - serviceName: immich-server
-      port: 2283
-      host: ${main_domain}
-
-  env:
-    - IMMICH_HOST=${main_domain}
-    - SERVER_URL=https://${main_domain}
-    - FRONT_BASE_URL=https://${main_domain}
-    - DB_HOSTNAME=immich-database
-    - DB_PORT=5432
-    - DB_USERNAME=${db_user}
-    - DB_PASSWORD=${db_password}
-    - DB_DATABASE_NAME=immich
-    - REDIS_HOSTNAME=immich-redis
-    - REDIS_PORT=6379
-    - REDIS_DBINDEX=0
-    - TZ=UTC
-
-  mounts: []