Remove strict reference to pytest in vscode settings. Update DEV_SETU…

…P to include notes about VScode unit testing setup.

python/.vscode/settings.json

@@ -29,9 +29,4 @@
     "python.analysis.extraPaths": [
         "${workspaceFolder}/samples/learn_resources"
     ],
-    "python.testing.pytestArgs": [
-        "tests"
-    ],
-    "python.testing.unittestEnabled": false,
-    "python.testing.pytestEnabled": true,
 }

python/DEV_SETUP.md

@@ -83,6 +83,18 @@ If prompted, install `ruff`. (It should have been installed as part of `uv sync
 You also need to install the `ruff` extension in VSCode so that auto-formatting uses the `ruff` formatter on save.
 Read more about the extension [here](https://github.com/astral-sh/ruff-vscode).
 
+### Configuring Unit Testing in VSCode
+
+- We have removed the strict dependency on forcing `pytest` usage via the `.vscode/settings.json` file.
+- Developers are free to set up unit tests using their preferred framework, whether it is `pytest` or `unittest`.
+- If needed, adjust VSCode's local `settings.json` (accessed via the Command Palette: **Open User Settings (JSON)**) to configure the test framework. For example:
+  ```json
+  "pythonTestExplorer.testFramework": "pytest"
+  ```
+  Or, for `unittest`:
+  ```json
+  "pythonTestExplorer.testFramework": "unittest"
+
 ## LLM setup
 
 Make sure you have an