refacto(cleanup): remove python 3.9 related code and deps (timezone) (#288)

Author: Guts

mkdocs_rss_plugin/timezoner_py39.py renamed to mkdocs_rss_plugin/timezoner.py

@@ -31,9 +31,7 @@
 from mkdocs_rss_plugin.integrations.theme_material_social_plugin import (
     IntegrationMaterialSocialCards,
 )
-
-# conditional imports
-from mkdocs_rss_plugin.timezoner_py39 import set_datetime_zoneinfo
+from mkdocs_rss_plugin.timezoner import set_datetime_zoneinfo
 
 # ############################################################################
 # ########## Globals #############

mkdocs_rss_plugin/timezoner_pre39.py

@@ -4,5 +4,4 @@
 
 GitPython>=3.1,<3.2
 mkdocs>=1.5,<2
-pytz==2022.* ; python_version < "3.9"
 tzdata==2024.* ; python_version >= "3.9" and sys_platform == "win32"