remove auth from lso settings

gso/oss-params-example.json

@@ -73,7 +73,6 @@
   "PROVISIONING_PROXY": {
     "scheme": "https",
     "api_base": "localhost:44444",
-    "auth": "Bearer <token>",
     "api_version": 1123
   },
   "CELERY": {

gso/settings.py

@@ -138,7 +138,6 @@ class ProvisioningProxyParams(BaseSettings):
     api_base: str
     #:  .. deprecated:: 0.1
     #:     Not used anymore, may be left out from config file.
-    auth: str | None
     api_version: int