Remove dead code guarded by OS(WINDOWS) && USE(PTHREADS).

Source/wtf/ThreadingWin.cpp

Index: Source/wtf/ThreadingWin.cpp
diff --git a/Source/wtf/ThreadingWin.cpp b/Source/wtf/ThreadingWin.cpp
index 1716a158b6abb704557121c6c10059848df0ef6c..971274cee677b23a024b2b7da37cfdb902bed6c3 100644
--- a/Source/wtf/ThreadingWin.cpp
+++ b/Source/wtf/ThreadingWin.cpp
@@ -94,6 +94,7 @@
 
 #include "MainThread.h"
 #include "ThreadFunctionInvocation.h"
+#include "ThreadSpecific.h"
 #include <windows.h>
 #include "wtf/CurrentTime.h"
 #include "wtf/HashMap.h"
@@ -103,10 +104,6 @@
 #include "wtf/RandomNumberSeed.h"
 #include "wtf/WTFThreadData.h"
 
-#if !USE(PTHREADS) && OS(WINDOWS)
-#include "ThreadSpecific.h"
-#endif
-
 #include <errno.h>
 #include <process.h>
 
@@ -205,10 +202,8 @@ static unsigned __stdcall wtfThreadEntryPoint(void* param)
     OwnPtr<ThreadFunctionInvocation> invocation = adoptPtr(static_cast<ThreadFunctionInvocation*>(param));
     invocation->function(invocation->data);
 
-#if !USE(PTHREADS) && OS(WINDOWS)
     // Do the TLS cleanup.
     ThreadSpecificThreadExit();
-#endif
 
     return 0;
 }