Remove another now-unnecessary msvs_cygwin_shell:1

Remove another now-unnecessary msvs_cygwin_shell:1

Was another workaround for escaping arguments, no longer needed in
ninja-only world.

R=thakis@chromium.org
BUG=123026
TEST=ninja -C out\Debug mini_installer

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=247650

[Nico, 2014-01-24 21:25:33]

lgtm

[commit-bot: I haz the power, 2014-01-24 21:31:21]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/130893006/1

[commit-bot: I haz the power, 2014-01-24 22:51:40]

Retried try job too often on win_rel for step(s) unit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[scottmg, 2014-01-24 23:05:37]

On 2014/01/24 22:51:40, I haz the power (commit-bot) wrote:
> Retried try job too often on win_rel for step(s) unit_tests
>
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

This seems likely to be related, but I am baffled as to how.

[commit-bot: I haz the power, 2014-01-29 03:23:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/130893006/1

[commit-bot: I haz the power, 2014-01-29 04:18:30]

Retried try job too often on mac_rel for step(s) remoting_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac_rel&nu...

[commit-bot: I haz the power, 2014-01-29 04:40:19]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/130893006/1

[commit-bot: I haz the power, 2014-01-29 06:39:07]

Change committed as 247650