Remove the code that attempts to find a locale from the command line VM in Windows.

pkg/intl/lib/intl_standalone.dart

Index: pkg/intl/lib/intl_standalone.dart
diff --git a/pkg/intl/lib/intl_standalone.dart b/pkg/intl/lib/intl_standalone.dart
index fc22cf965dea8931ea0ac99379b989e402139010..e40126ff5d2af02872044ce6de0482ba6ca0e464 100644
--- a/pkg/intl/lib/intl_standalone.dart
+++ b/pkg/intl/lib/intl_standalone.dart
@@ -35,12 +35,10 @@ import "intl.dart";
 Future<String> findSystemLocale() {
   // On *nix systems we expect this is an environment variable, which is the
   // easiest thing to check. On a Mac the environment variable may be present
-  // so always check it first.
+  // so always check it first. We have no mechanism for this right now on
+  // Windows, so it will just fail.
   String baseLocale = _checkEnvironmentVariable();
   if (baseLocale != null) return _setLocale(baseLocale);
-  if (Platform.operatingSystem == 'windows') {
-    return _getWindowsSystemInfo();
-  }
   if (Platform.operatingSystem == 'macos') {
     return _getAppleDefaults();
   }
@@ -49,12 +47,6 @@ Future<String> findSystemLocale() {
 }
 
 /**
- * Regular expression to match the expected output of systeminfo on
- * Windows. e.g. System Locale:<tab>en_US;English (United States)
- */
-RegExp sysInfoRegex = new RegExp(r"System Locale:\s+((\w\w;)|(\w\w-\w+;))");
-
-/**
  * Regular expression to match the expected output of reading the defaults
  * database for AppleLanguages on Mac systems.
  * e.g. {
@@ -86,15 +78,6 @@ Future _getAppleDefaults() {
 }
 
 /**
- * Run the "systemlocale" command and return the output in a future.
- */
-Future _getWindowsSystemInfo() {
-  var p = Process.run('systeminfo', []);
-  var myResult = p.then((result) => _checkResult(result, sysInfoRegex));
-  return myResult;
-}
-
-/**
  * Given [result], find its text and extract the locale from it using
  * [regex], and set it as the system locale. If the process didn't run correctly
  * then don't set the variable and return a future that completes with null.