fix: remove redundant .close()

On py313, pathlib.Path.glob() now returns a `map` object,which cannot be .close()

File "/usr/lib/python3.13/site-packages/ncmlyrics/util.py", line 122, in testExistTrackSource
  globing.close()
  ^^^^^^^^^^^^^
AttributeError: 'map' object has no attribute 'close'

ncmlyrics/util.py

@@ -118,8 +118,6 @@ def testExistTrackSource(track: NCMTrack, path: Path) -> Path | None:
         return next(globing)
     except StopIteration:
         return None
-    finally:
-        globing.close()
 
 
 def pickOutput(track: NCMTrack, outputs: list[Path], forceSourceExists: bool = False) -> Path | None: