bundle2: stop capturing output for ssh again
This backout 36111f98f23d since we can have real time output with ssh
again. The tests change is not backed-out because it was a test output
fix.
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init
$ echo 'base' > base
$ hg ci -Ambase
adding base
$ hg qnew -mmqbase mqbase
$ hg qsave
$ hg qrestore 2
restoring status: hg patches saved state