diff --git a/pre_commit_hooks/shellcheck_run_steps.py b/pre_commit_hooks/shellcheck_run_steps.py
index 5c66bce..a466f57 100644
--- a/pre_commit_hooks/shellcheck_run_steps.py
+++ b/pre_commit_hooks/shellcheck_run_steps.py
@@ -5,35 +5,15 @@
 import os
 import subprocess
 import tempfile
-from collections.abc import Generator
 from collections.abc import Mapping
 from collections.abc import Sequence
 from typing import Any
-from typing import NamedTuple
 
 import ruamel.yaml
 
 yaml = ruamel.yaml.YAML(typ="safe")
 
 
-def _exhaust(gen: Generator[str]) -> None:
-    for _ in gen:
-        pass
-
-
-def _parse_unsafe(*args: Any, **kwargs: Any) -> None:
-    _exhaust(yaml.parse(*args, **kwargs))
-
-
-def _load_all(*args: Any, **kwargs: Any) -> None:
-    _exhaust(yaml.load_all(*args, **kwargs))
-
-
-class Key(NamedTuple):
-    multi: bool
-    unsafe: bool
-
-
 def do_shellcheck(
     melange_cfg: Mapping[str, Any],
     shellcheck: list[str],
diff --git a/ruff.toml b/ruff.toml
deleted file mode 100644
index e1514d1..0000000
--- a/ruff.toml
+++ /dev/null
@@ -1 +0,0 @@
-line-length = 80