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/yourls/template.yml

@@ -1,20 +0,0 @@
-variables:
-  main_domain: ${domain}
-  mysql_password: ${password}
-  mysql_root_password: ${password}
-  admin_password: ${password}
-
-config:
-  domains:
-    - serviceName: yourls-app
-      port: 80
-      host: ${main_domain}
-
-  env:
-    YOURLS_HOST: ${main_domain}
-    YOURLS_ADMIN_USER: "admin"
-    YOURLS_ADMIN_PASSWORD: ${admin_password}
-    MYSQL_PASSWORD: ${mysql_password}
-    MYSQL_ROOT_PASSWORD: ${mysql_root_password}
-
-  mounts: []