Post: remove PyPy3 support (#227)

* Post: remove PyPy3 support

Small and quick post to announce:
readthedocs/readthedocs.org#10514

* Update pypy-support-removed.rst

Co-authored-by: Eric Holscher <[email protected]>

---------

Co-authored-by: Eric Holscher <[email protected]>

Author: humitos

pypy-support-removed.rst

@@ -0,0 +1,18 @@
+.. post:: July 10, 2023
+   :tags: builders
+   :author: Manuel
+   :location: BCN
+   :category: Changelog
+
+Support for PyPy3 removed
+=========================
+
+Starting on **July 18, 2023** PyPy3 will be removed as an option to build documentation on Read the Docs.
+
+This feature was introduced as an alternative to make Sphinx build faster.
+However, we found there are no projects building their documentation with PyPy3
+and we decided to remove its support to simplify our product and reduce development maintanence.
+
+Please, `contact us`_ and let us know if you *require* PyPy3 to build your documentation.
+
+.. _contact us: mailto:[email protected]