--- a/cutils/treesum.py	Wed Mar 26 12:56:19 2025 +0100
+++ b/cutils/treesum.py	Wed Mar 26 13:00:40 2025 +0100
@@ -1243,52 +1243,6 @@
             return name
 
 
-class CRC32Output(object):
-
-    """Wrapper for a minimal binary file contextmanager that calculates
-    the CRC32 of the written bytes on the fly.
-
-    Also acts as context manager proxy for the given context manager.
-
-    """
-
-    __slots__ = ("_fp_cm", "_fp", "_crc32")
-
-    def __init__(self, fp_cm):
-        self._fp_cm = fp_cm
-        self._fp = None
-        self.resetdigest()
-
-    def __enter__(self):
-        assert self._fp is None
-        self._fp = self._fp_cm.__enter__()
-        return self
-
-    def __exit__(self, *args):
-        rv = self._fp_cm.__exit__(*args)
-        self._fp = None
-        return rv
-
-    def write(self, what):
-        self._fp.write(what)
-        self._crc32.update(what)
-
-    def flush(self):
-        self._fp.flush()
-
-    def resetdigest(self):
-        """Reset the current CRC digest"""
-        self._crc32 = crc32()
-
-    def hexcrcdigest(self):
-        """
-
-        :rtype: str
-
-        """
-        return self._crc32.hexdigest()
-
-
 def normalized_compatible_mode_str(mode):
     # XXX FIXME: Windows and "executable"
     modebits = stat.S_IMODE(mode)