fix: remove SSO reference while WIP

.env.sample

@@ -30,29 +30,4 @@ TX="Europe/Berlin"
 #SMTP_USERNAME=noreply@example.com
 #SMTP_HOST=mail.example.com
 #SMTP_PORT=587
-#SMTP_SECURITY=starttls
-
-## SSO Setup Start ##
-
-## SSO Required Setup
-#SSO_ENABLED=false ## Activate the SSO
-
-## the OpenID Connect Discovery endpoint of your SSO. Should not include the /.well-known/openid-configuration part and no trailing / ${SSO_AUTHORITY}/.well-known/openid-configuration must return a JSON document: https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfigurationResponse (with an HTTP status code 200 OK!)
-#SSO_AUTHORITY=
-#SSO_CLIENT_ID=             
-#SSO_CLIENT_SECRET= 
-#SSO_ONLY=false ## disable email+Master password authentication
-
-## SSO Optional Setup
-#SSO_SIGNUPS_MATCH_EMAIL=true ##: On SSO Signup if a user with a matching email already exists make the association (default true)
-#SSO_ALLOW_UNKNOWN_EMAIL_VERIFICATION=false ## Allow unknown email verification status (default false). Allowing this with SSO_SIGNUPS_MATCH_EMAIL open potential account takeover.
-#SSO_SCOPES= ##Optional, allow to override scopes if needed (default "email profile")
-#SSO_AUTHORIZE_EXTRA_PARAMS= ## Optional, allow to add extra parameter to the authorize redirection (default "")
-#SSO_PKCE=true ## Activate PKCE for the Auth Code flow (default true).
-#SSO_AUDIENCE_TRUSTED= ##Optional, Regex to trust additional audience for the IdToken (client_id is always trusted). Use single quote when writing the regex: '^$'.
-#SSO_MASTER_PASSWORD_POLICY ## Optional Master password policy (enforceOnLogin is not supported).
-#SSO_AUTH_ONLY_NOT_SESSION ## Enable to use SSO only for authentication not session lifecycle
-#SSO_CLIENT_CACHE_EXPIRATION=0 ## Cache calls to the discovery endpoint, duration in seconds, 0 to disable (default 0);
-#SSO_DEBUG_TOKENS=false ## Log all tokens for easier debugging (default false, LOG_LEVEL=debug or LOG_LEVEL=info,vaultwarden::sso=debug need to be set)
-
-## SSO Setup End ##
+#SMTP_SECURITY=starttls