style: apply ruff fixes and formatting

Signed-off-by: Pavan-Rana <psrbr157@gmail.com>

Author: Pavan-Rana

sqlmesh/utils/cache.py

@@ -65,7 +65,10 @@ def __init__(self, path: Path, prefix: t.Optional[str] = None):
 
             try:
                 stat_result = file.stat()
-                if not file.stem.startswith(self._cache_version) or stat_result.st_atime < threshold:
+                if (
+                    not file.stem.startswith(self._cache_version)
+                    or stat_result.st_atime < threshold
+                ):
                     file.unlink(missing_ok=True)
             except FileNotFoundError:
                 # File was deleted between glob() and stat() — skip stale cache entries gracefully

tests/utils/test_cache.py

@@ -1,5 +1,3 @@
-import os
-import time
 import typing as t
 from pathlib import Path
 
@@ -151,4 +149,3 @@ def flaky_stat(self, **kwargs):
     mocker.patch.object(Path, "stat", flaky_stat)
 
     FileCache(tmp_path)
-