Kill HAVE_PTHREADS.

Bug: 19083585
Change-Id: Ie447de13ddafbf7b9683b2b312dfe5a78a8b256c
diff --git a/src/config.h b/src/config.h
index 68cf913..db26fd7 100644
--- a/src/config.h
+++ b/src/config.h
@@ -10,9 +10,6 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #define HAVE_MEMORY_H 1
 
-#ifdef ANDROID
-#undef HAVE_PTHREADS
-#endif
 /* "os has pthreads" */
 #define HAVE_PTHREADS 1