[PATCH 2 of 2] chgserver: remove _clearenvaliases

[Sean Farley]

Jun Wu <quark at fb.com> writes:

> # HG changeset patch
> # User Jun Wu <quark at fb.com>
> # Date 1462575476 -3600
> #      Fri May 06 23:57:56 2016 +0100
> # Node ID 83928625fb4d89dd067b1b0ca5b39113f17ea4ba
> # Parent  24dc9e5deec415bfa635fb80c7767ef5146c2775
> chgserver: remove _clearenvaliases
>
> Since we expand environment variables in alias lazily, the _clearenvaliases
> hack is no longer necessary.
>
> This resolves an issue that a non-shell alias which has environment variables
> in its arguments and is set to use pager will not use pager running with chg.

These look good to me but I'd like Yuya to take a look as well.