bpo-38413: Remove outdated section about multithreading in sqlite3 (GH-23159)

(cherry picked from commit f9949f8)

Co-authored-by: Vladimir <[email protected]>

Author: miss-islington

Doc/library/sqlite3.rst

@@ -1093,19 +1093,6 @@ committed:
 .. literalinclude:: ../includes/sqlite3/ctx_manager.py
 
 
-Common issues
--------------
-
-Multithreading
-^^^^^^^^^^^^^^
-
-Older SQLite versions had issues with sharing connections between threads.
-That's why the Python module disallows sharing connections and cursors between
-threads. If you still try to do so, you will get an exception at runtime.
-
-The only exception is calling the :meth:`~Connection.interrupt` method, which
-only makes sense to call from a different thread.
-
 .. rubric:: Footnotes
 
 .. [#f1] The sqlite3 module is not built with loadable extension support by