sshpeer: remove frivolous call to _cleanup()
_validaterepo() is called once during __init__. _cleanup()
no-ops if the self._pipe* attributes aren't set. These attributes
are set during _validaterepo(). So the call to _cleanup() isn't
necessary.
But just to be on the safe side, we add an assertion.
Differential Revision: https://phab.mercurial-scm.org/D2030
running: init test1
result: None
running: add foo
result: 0
running: commit -m commit1 -d 2000-01-01 foo
result: None
running: commit -m commit2 -d 2000-01-02 foo
result: None
running: log -r 0
changeset: 0:0e4634943879
user: test
date: Sat Jan 01 00:00:00 2000 +0000
summary: commit1
result: None
running: log -r tip
changeset: 1:45589e459b2e
tag: tip
user: test
date: Sun Jan 02 00:00:00 2000 +0000
summary: commit2
result: None