Remove obsolete TODO

The fnctl.flock call does not use LOCK_NB, so if it fails with an OSError, that is Really Bad™ and can't be handled cleanly.

qwarc/warc.py

@@ -256,7 +256,6 @@ class WARC:
 
 	def _write_meta_warc(self, callback):
 		filename = f'{self._prefix}-meta.warc.gz'
-		#TODO: Handle OSError on fcntl.flock and retry
 		self._file = open(filename, 'ab')
 		try:
 			fcntl.flock(self._file.fileno(), fcntl.LOCK_EX)