fix(imports): rm unused imports

Author: Guts

mkdocs_rss_plugin/integrations/theme_material_base.py

@@ -17,8 +17,6 @@
 # conditional
 try:
     from material import __version__ as material_version
-    from material.plugins.blog.plugin import BlogPlugin
-    from pymdownx.slugs import slugify
 
 except ImportError:
     material_version = None