Jun Wu <quark@fb.com> [Thu, 12 May 2016 01:03:19 +0100] rev 29162
hgcia: remove hgcia (BC)
As discussed at:
https://www.mercurial-scm.org/pipermail/mercurial-devel/2016-March/081018.html,
cia service is down for years. It also uses socket.setdefaulttimeout() which
will break chg. This patch removes the extension.