No longer delete .venv directory in Python build script

If you're using the correct Python version (which you're supposed to be), the script will try to delete the Python executable that's running it(!), which, understandably, fails.

Author: Bentroen

datafiles/Data/Python/README.md

@@ -10,19 +10,21 @@ This is a subproject of Open Note Block Studio, which holds the Python modules u
 
 3. This subproject uses [poetry](https://python-poetry.org/) for managing dependencies. Make sure to install it, and run the following command with the subproject's root (`datafiles/Data/Python`) as your current working directory:
 
-   ```shell
-   $ poetry env use 3.8 # if you have more than one Python version installed
-   $ poetry install --no-dev
-   ```
+    ```shell
+    $ poetry env use 3.8 # if you have more than one Python version installed
+    $ poetry install --no-dev
+    ```
 
 4. Run `package.py`:
 
-   ```shell
-   $ python package.py
-   ```
+    ```shell
+    $ python package.py
+    ```
 
-   This will delete the virtual environment created on the last step, and prepare all dependencies to be packaged with Note Block Studio's executable.
+    This will prepare all dependencies to be packaged with Note Block Studio's executable.
 
-5. Open the project in GameMaker, and save it so the included files are registered. **Do NOT commit the changes to the project file.**
+5. Delete the `.venv` directory that was created.
 
-6. You can now build the project in GameMaker!
+6. Open the project in GameMaker, and save it so the included files are registered. **Do NOT commit the changes to the project file.**
+
+7. You can now build the project in GameMaker!

datafiles/Data/Python/package.py

@@ -116,11 +116,10 @@ def main():
                 if filename.endswith(".py"):
                     os.remove(os.path.join(root, filename))
 
-    # Delete virtual environment
-    print("Removing virtual environment")
-    shutil.rmtree(ENV_PATH)
-
     print(f"Done! {package_count} packages were added.")
+    print(
+        f"Don't forget to delete the {ENV_PATH} directory before building the GameMaker project."
+    )
 
 
 if __name__ == "__main__":