Kill HAVE_PTHREADS.

Bug: 19083585
Change-Id: Ic09eb3dd250bc5c5b63cac7998f99f5fa007f407
diff --git a/include/utils/AndroidThreads.h b/include/utils/AndroidThreads.h
index 3c640b6..aad1e82 100644
--- a/include/utils/AndroidThreads.h
+++ b/include/utils/AndroidThreads.h
@@ -20,7 +20,7 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#if defined(HAVE_PTHREADS)
+#if !defined(_WIN32)
 # include <pthread.h>
 #endif