Cleanup/Remove Windows XP/Vista version checks from Windows sandbox code

sandbox/win/src/interception.cc

Index: sandbox/win/src/interception.cc
diff --git a/sandbox/win/src/interception.cc b/sandbox/win/src/interception.cc
index f0a2a61fb379be2d5d072ddf4f1dc96b333a4f11..0243c245f5934eba86363206b3abe601abb2dcd0 100644
--- a/sandbox/win/src/interception.cc
+++ b/sandbox/win/src/interception.cc
@@ -23,7 +23,6 @@
 #include "sandbox/win/src/service_resolver.h"
 #include "sandbox/win/src/target_interceptions.h"
 #include "sandbox/win/src/target_process.h"
-#include "sandbox/win/src/wow64.h"
 
 namespace sandbox {
 
@@ -469,12 +468,6 @@ bool InterceptionManager::PatchClientFunctions(DllInterceptionData* thunks,
       return false;
   }
 
-  if (base::win::GetVersion() <= base::win::VERSION_VISTA) {
-    Wow64 WowHelper(child_, ntdll_base);
-    if (!WowHelper.WaitForNtdll())
-      return false;
-  }
-
   char* interceptor_base = NULL;
 
 #if SANDBOX_EXPORTS