docs: TODO: drop the section-name entry

#809 gave
extract_conn_params_from_section() its section_name, and plann passes
it in PyCalendar/plann#81, so nothing is left
of the entry.

Prompt: [fix issues found during the review process of merging #808]

Assisted-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Reviewed-by: Tobias Brox <tobias@redpill-linpro.com>

Author: tobixen

docs/design/TODO.md

@@ -44,10 +44,6 @@ A response whose `Content-Type` says XML but whose body is not XML (an HTML erro
 
 `TestServer.claim_server()` in `tests/test_servers/base.py` polls for the flock (up to `PYTHON_CALDAV_TEST_SERVER_LOCK_TIMEOUT`, 30 minutes by default) while holding the module-wide `_session_locks_mutex`.  A thread waiting for one busy server therefore blocks every other thread claiming a different server, which contradicts "runs against different servers proceed in parallel".  Harmless for single-threaded pytest.  Fix: hold the mutex only around the `_session_locks` checks and inserts, with a per-name lock against double claims.  Found in the review of https://github.com/python-caldav/caldav/pull/776.
 
-## Config errors from extract_conn_params_from_section name no section
-
-`extract_conn_params_from_section()` in `caldav/config.py` passes the fixed name `"section"` to calendaring-config's `section_connection()`, so a failing `password_command` reads "password_command of section section exited with status 3" for plann users.  Fix: an optional `section_name` parameter, passed on, and plann giving its section names.  Found in the review of plann's switch to caldav 3.6, see https://github.com/python-caldav/caldav/issues/786.
-
 ## calendar_multiget() fails on an async client
 
 `Calendar.calendar_multiget()` in `caldav/collection.py` does `list(self.multiget(...))`, but `multiget()` returns a coroutine for an async client, so the call raises `TypeError`.  `calendar_multiget()` has no return annotation, so a type checker does not catch it.  Fix: return `self.multiget(...)` for an async client (or annotate it like `multiget()`), with an async unit test.  Found in the review of the fix for https://github.com/python-caldav/caldav/issues/799.