remove unused code for auth

gso/auth/settings.py

-"""Security configurations and utilities for the GSO application. Handles OAuth2 and OpenID Connect.
-
-authentication and authorization, including token validation and user authentication. Integrates
-with external authentication providers for enhanced security management.
-
-Todo: Remove token and sensitive data from OPA console and API.
-"""
-
-from pydantic import Field
-from pydantic_settings import BaseSettings
-
-
-class Oauth2LibSettings(BaseSettings):
-    """Common settings for applications depending on oauth2."""
-
-    ENVIRONMENT: str = "local"
-    SERVICE_NAME: str = ""
-    MUTATIONS_ENABLED: bool = False
-    ENVIRONMENT_IGNORE_MUTATION_DISABLED: list[str] = Field(
-        default_factory=list, description="Environments for which to allow unauthenticated mutations"
-    )
-    OAUTH2_ACTIVE: bool = True
-    OAUTH2_AUTHORIZATION_ACTIVE: bool = True
-
-
-oauth2lib_settings = Oauth2LibSettings()
-
-
-class Oauth2Settings(BaseSettings):
-    """Configuration settings for OAuth2 and OpenID Connect (OIDC)."""
-
-    OAUTH2_RESOURCE_SERVER_ID: str = ""
-    OAUTH2_RESOURCE_SERVER_SECRET: str = ""
-    OAUTH2_TOKEN_URL: str = ""
-    OIDC_CONF_WELL_KNOWN_URL: str = ""
-    OPA_URL: str = "http://localhost:8181/v1/data/gap/gso/api/access"
-
-
-oauth2_settings = Oauth2Settings()