Remove out-of-date comment in Win.setup_environ_for_server

Win.setup_environ_for_server copies a few more environment variables
for apache on Windows. I checked (in patchset one of this CL) whether
these are still necessary, and they are. This CL would just update
the comment.

Change-Id: Iae3b9c4e379cc77457ca6bc66cee4a95c9a46018
Reviewed-on: https://chromium-review.googlesource.com/590579Reviewed-by: Jeff Carpenter <jeffcarp@chromium.org>
Commit-Queue: Quinten Yearsley <qyearsley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491767}

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/win.py

@@ -155,16 +155,12 @@ class WinPort(base.Port):
             self._crash_service = None
 
     def setup_environ_for_server(self):
+        # A few extra environment variables are required for Apache on Windows.
         env = super(WinPort, self).setup_environ_for_server()
-
-        # FIXME: This is a temporary hack to get the cr-win bot online until
-        # someone from the cr-win port can take a look.
-        # TODO(qyearsley): Remove this in a separate CL.
         apache_envvars = ['SYSTEMDRIVE', 'SYSTEMROOT', 'TEMP', 'TMP']
         for key, value in self.host.environ.copy().items():
             if key not in env and key in apache_envvars:
                 env[key] = value
-
         return env
 
     def check_build(self, needs_http, printer):