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/vaultwarden/template.yml

@@ -1,16 +0,0 @@
-variables:
-  main_domain: ${domain}
-
-config:
-  domains:
-    - serviceName: vaultwarden
-      port: 80
-      host: ${main_domain}
-
-  env:
-    # Deactivate this with 'false' after you have created your account so that no strangers can register
-    SIGNUPS_ALLOWED: "true"
-    # required when using a reverse proxy; your domain; vaultwarden needs to know it's https to work properly with attachments
-    DOMAIN: https://${main_domain}
-
-  mounts: []