docs: remove a useless argument

Author: lmxyy

docs/source/conf.py

@@ -74,7 +74,6 @@
     "use_edit_page_button": True,
     "use_issues_button": True,
     "use_download_button": True,
-    "logo_only": False,
     "show_navbar_depth": 2,
     "home_page_in_toc": True,
     "show_toc_level": 2,