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/logto/template.yml

@@ -1,20 +0,0 @@
-variables:
-  main_domain: ${domain}
-  admin_domain: ${domain}
-  postgres_password: ${password}
-
-config:
-  domains:
-    - serviceName: app
-      port: 3001
-      host: ${main_domain}
-    - serviceName: app
-      port: 3002
-      host: ${admin_domain}
-
-  env:
-    LOGTO_ENDPOINT: http://${admin_domain}
-    LOGTO_ADMIN_ENDPOINT: http://${admin_domain}
-    LOGTO_POSTGRES_PASSWORD: ${postgres_password}
-
-  mounts: []