feat: Remove OIDC and SSO support

Existing SSO accounts have no local password, so the migration
deactivates them before dropping is_sso_user and the
identity_provider_user table.

client/src/sagas/core/services/router.js

@@ -53,7 +53,6 @@ export function* handleLocationChange() {
 
   switch (pathsMatch.pattern.path) {
     case Paths.LOGIN:
-    case Paths.OIDC_CALLBACK:
       yield call(goToRoot);
 
       break;