[docs] Misc improvements

Closes #4987, Closes #4906, Closes #4919, Closes #4977, Closes #4979

setup.cfg

@@ -10,6 +10,14 @@ per_file_ignores =
     devscripts/lazy_load_template.py: F401
 
 
+[autoflake]
+ignore-init-module-imports = true
+ignore-pass-after-docstring = true
+remove-all-unused-imports = true
+remove-duplicate-keys = true
+remove-unused-variables = true
+
+
 [tool:pytest]
 addopts = -ra -v --strict-markers
 markers =