Remove all subdirectories inside tests/pipelines when no example chos…

…en (#3956)

Signed-off-by: Merel Theisen <[email protected]>

kedro/templates/project/hooks/utils.py

@@ -148,9 +148,10 @@ def _remove_pyspark_viz_starter_files(is_viz: bool, python_package_name: str) ->
     for pipeline_subdir in pipelines_to_remove:
         _remove_dir(pipelines_path / pipeline_subdir)
 
-    # Remove all test files from tests/pipelines/
+    # Remove all test files and subdirectories from tests/pipelines/
     test_pipeline_path = current_dir / "tests/pipelines/data_science/test_pipeline.py"
     _remove_file(test_pipeline_path)
+    _remove_dir(current_dir / "tests/pipelines/data_science")
 
 
 def _remove_extras_from_kedro_datasets(file_path: Path) -> None: