Remove content_size from  LZ4FrameCompressor
@@ -58,7 +58,6 @@ class LZ4FrameCompressor(object):
self.content_checksum = content_checksum
self.frame_type = frame_type
self.auto_flush = auto_flush
- self.content_size = content_size
self._context = create_compression_context()
self._started = False
