Revert "[d8] cleanly force exit in d8 on windows."

src/d8-windows.cc

Index: src/d8-windows.cc
diff --git a/src/d8-windows.cc b/src/d8-windows.cc
index e7ddca694fcf4c9b345b9b006f2377f1854b6987..ba89c4156fdf0daf8165c93bc78d97ebab9cc733 100644
--- a/src/d8-windows.cc
+++ b/src/d8-windows.cc
@@ -10,12 +10,5 @@ namespace v8 {
 
 void Shell::AddOSMethods(Isolate* isolate, Local<ObjectTemplate> os_templ) {}
 
-void Shell::Exit(int exit_code) {
-  // Use TerminateProcess avoid races between isolate threads and
-  // static destructors.
-  fflush(stdout);
-  fflush(stderr);
-  TerminateProcess(GetCurrentProcess(), exit_code);
-}
 
 }  // namespace v8