Remove a newly-added exception.
It turns out that the same code in `http.py` is used for processing both (1)
the initial response and redirect and (2) the replies containing actual bytes
for download. This means that the new exception we added for (2) leads to
problems in (1).
diff --git a/googleapiclient/http.py b/googleapiclient/http.py
index cdc9f58..22cb80c 100644
--- a/googleapiclient/http.py
+++ b/googleapiclient/http.py
@@ -561,8 +561,6 @@
self._total_size = int(length)
elif 'content-length' in resp:
self._total_size = int(resp['content-length'])
- else:
- raise HttpError(resp, content, uri=self._uri)
if self._progress == self._total_size:
self._done = True