Merge pull request matplotlib#20308 from anntzer/pgfo

Remove outdated comment re: pgf/windows.

Author: jklymak

tutorials/text/pgf.py

@@ -150,11 +150,6 @@
   executables. See :ref:`environment-variables` and
   :ref:`setting-windows-environment-variables` for details.
 
-* A limitation on Windows causes the backend to keep file handles that have
-  been opened by your application open. As a result, it may not be possible
-  to delete the corresponding files until the application closes (see
-  `#1324 <https://github.com/matplotlib/matplotlib/issues/1324>`_).
-
 * Sometimes the font rendering in figures that are saved to png images is
   very bad. This happens when the pdftocairo tool is not available and
   ghostscript is used for the pdf to png conversion.