Remove rationale comment from WIF e2e teardown

The behavior is self-evident from a bare `delete()` with no try/except;
the rationale belongs in the PR / commit history, not the test body.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: sushmasreedharan-tableau

test_e2e/test_auth_federation.py

@@ -60,10 +60,6 @@ def wif_site(server):
 
     yield server
 
-    # Let any ServerResponseError propagate: a failed teardown delete must
-    # surface as a pytest teardown error. Swallowing it would leave WIF
-    # enabled on the site, so the next run would skip (fixture guard above)
-    # and silently stop exercising the destructive paths.
     server.auth_federation.delete()