KNOWN_BUGS: #2, not reading a HEAD response-body is not a bug

... since HTTP is forbidden to return any such.

docs/KNOWN_BUGS

@@ -235,13 +235,3 @@ may have been fixed since this was written!
   it seems HTTP servers send the *uncompressed* length in that header and
   libcurl thinks of it as the *compressed* length. Some explanations are here:
   http://curl.haxx.se/mail/lib-2003-06/0146.html
-
-2. If a HTTP server responds to a HEAD request and includes a body (thus
-  violating the RFC2616), curl won't wait to read the response but just stop
-  reading and return back. If a second request (let's assume a GET) is then
-  immediately made to the same server again, the connection will be re-used
-  fine of course, and the second request will be sent off but when the
-  response is to get read, the previous response-body is what curl will read
-  and havoc is what happens.
-  More details on this is found in this libcurl mailing list thread:
-  http://curl.haxx.se/mail/lib-2002-08/0000.html