refactor(clew): resolve default output uniformly

src/clew/clew.py

@@ -27,7 +27,7 @@ def parse_args(argv: list[str]) -> argparse.Namespace:
     parser.add_argument(
         "--output-root",
         type=Path,
-        default=default_output_root(),
+        default=Path("output"),
         help="Preparation output root. Defaults to repository output/.",
     )
     parser.add_argument(
@@ -43,13 +43,6 @@ def parse_args(argv: list[str]) -> argparse.Namespace:
     return parser.parse_args(argv)
 
 
-def default_output_root() -> Path:
-    workspace = os.environ.get("BUILD_WORKSPACE_DIRECTORY")
-    if workspace:
-        return Path(workspace) / "output"
-    return Path(__file__).resolve().parent / "output"
-
-
 def fail(message: str) -> None:
     raise SystemExit(f"clew: {message}")