refactor(api): remove token variable from OpenAPI specifications for clarity

openapi.yaml

@@ -6,10 +6,6 @@ servers:
   -
     url: 'https://app.coolify.io/api/v1'
     description: 'Coolify Cloud API. Change the host to your own instance if you are self-hosting.'
-    variables:
-      token:
-        default: 'Coolify token for authentication'
-        description: your-coolify-token-here
 paths:
   /applications:
     get: