Fix SAML provider incorrectly added to Docker SSL (#178555)

## Summary

The existence of `kibanaUrl` in the default parameters leads to the SAML
role provider being enabled for `yarn es docker --ssl` and then ES
crashing on startup. This option should only be a default for `yarn es
serverless --ssl`

scripts/es.js

@@ -20,7 +20,6 @@ kbnEs
     'source-path': resolve(__dirname, '../../elasticsearch'),
     'base-path': resolve(__dirname, '../.es'),
     ssl: false,
-    kibanaUrl: 'https://localhost:5601/',
   })
   .catch(function (e) {
     console.error(e);