Remove default coc-pyright args for flake8

- Default args cause problems when we have other custom flake8 rules
  defined in files such as tox.ini since these project-specifc settings
  were simply getting ignored in favor of the default args. We should
  instead always rely on the project's settings

home/.config/nvim/coc-settings.json

@@ -11,8 +11,5 @@
     "coc.preferences.formatOnSaveFiletypes": [
         "json"
     ],
-    "python.linting.flake8Enabled": true,
-    "python.linting.flake8Args": [
-        "--ignore=ANN204,ANN101,ANN102,ANN002,ANN003"
-    ]
+    "python.linting.flake8Enabled": true
 }