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/windmill/template.yml

@@ -1,23 +0,0 @@
-variables:
-  main_domain: ${domain}
-  postgres_password: ${password}
-
-config:
-  domains:
-    - serviceName: windmill-caddy
-      port: 80
-      host: ${main_domain}
-
-  env:
-    WINDMILL_HOST: ${main_domain}
-    POSTGRES_PASSWORD: ${postgres_password}
-    DATABASE_URL: postgres://postgres:${postgres_password}@windmill-postgres/windmill?sslmode=disable
-
-  mounts:
-    - filePath: Caddyfile
-      content: |
-        :80 {
-            bind 0.0.0.0
-            reverse_proxy /ws/* http://windmill-lsp:3001
-            reverse_proxy /* http://windmill-server:8000
-        }