Code cleanup and improvements.

ptlinux/runtime.py

@@ -507,36 +507,6 @@ def _resolve_runtime_path_case(root: Path, relative: PurePosixPath) -> Path:
 	return cursor
 
 
-def run_proton_prefix_command(
-	paths: AppPaths,
-	selection: RuntimeSelection,
-	runner: CommandRunner,
-	arguments: Sequence[str],
-	*,
-	check: bool = True,
-	timeout_seconds: float = 60.0,
-) -> CommandOutcome:
-	"""Run a maintenance command in the pinned Proton 7 prefix."""
-
-	if selection.kind not in {"proton7", "proton7-container"}:
-		raise RuntimeErrorPT("the login trace requires the pinned Proton 7 runtime")
-	if not selection.proton_path or not selection.steam_root:
-		raise RuntimeErrorPT("incomplete Proton 7 runtime selection")
-	return runner.run(
-		[
-			sys.executable,
-			"-m",
-			"ptlinux.proton_compat",
-			selection.proton_path,
-			"runinprefix",
-			*arguments,
-		],
-		env_overrides=_proton_environment(paths, selection),
-		timeout_seconds=timeout_seconds,
-		check=check,
-	)
-
-
 def run_runtime_prefix_command(
 	paths: AppPaths,
 	selection: RuntimeSelection,