Uninstall pre-installed tools from devcontainer (home-assistant#79765)

.devcontainer/devcontainer.json

@@ -17,8 +17,14 @@
   // Please keep this file in sync with settings in home-assistant/.vscode/settings.default.json
   "settings": {
     "python.pythonPath": "/usr/local/bin/python",
-    "python.linting.pylintEnabled": true,
     "python.linting.enabled": true,
+    "python.linting.pylintEnabled": true,
+    "python.formatting.blackPath": "/usr/local/bin/black",
+    "python.linting.flake8Path": "/usr/local/bin/flake8",
+    "python.linting.pycodestylePath": "/usr/local/bin/pycodestyle",
+    "python.linting.pydocstylePath": "/usr/local/bin/pydocstyle",
+    "python.linting.mypyPath": "/usr/local/bin/mypy",
+    "python.linting.pylintPath": "/usr/local/bin/pylint",
     "python.formatting.provider": "black",
     "python.testing.pytestArgs": ["--no-cov"],
     "editor.formatOnPaste": false,

Dockerfile.dev

@@ -2,6 +2,15 @@ FROM mcr.microsoft.com/vscode/devcontainers/python:0-3.9
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
+# Uninstall pre-installed formatting and linting tools
+# They would conflict with our pinned versions
+RUN pipx uninstall black
+RUN pipx uninstall flake8
+RUN pipx uninstall pydocstyle
+RUN pipx uninstall pycodestyle
+RUN pipx uninstall mypy
+RUN pipx uninstall pylint
+
 RUN \
     curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
     && apt-get update \