chgserver: backout changeset dfb19aed409e (per discussion)

On Wed, 21 Dec 2016 15:39:05 +0000, Jun Wu wrote:
> Actually, patch 1 is unnecessary if we go with the "ui._runpager" approach.
> Maybe someone can drop it without adding too many markers.

mercurial/chgserver.py

@@ -327,9 +327,8 b' class channeledsystem(object):'
 
 class chgcmdserver(commandserver.server):
     def __init__(self, ui, repo, fin, fout, sock, hashstate, baseaddress):
-        self._csystem = channeledsystem(fin, fout, 'S')
         super(chgcmdserver, self).__init__(
-            _newchgui(ui, self._csystem), repo, fin, fout)
+            _newchgui(ui, channeledsystem(fin, fout, 'S')), repo, fin, fout)
         self.clientsock = sock
         self._oldios = []  # original (self.ch, ui.fp, fd) before "attachio"
         self.hashstate = hashstate