double pthread_testcancel() declaration

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6384 4407c894-4637-0410-b4f5-ada5f102cad1

mingw-w64-libraries/winpthreads/include/pthread.h

diff --git a/mingw-w64-libraries/winpthreads/include/pthread.h b/mingw-w64-libraries/winpthreads/include/pthread.h
index c1a5104..7b98dee 100644
--- a/mingw-w64-libraries/winpthreads/include/pthread.h
+++ b/mingw-w64-libraries/winpthreads/include/pthread.h
@@ -305,7 +305,6 @@
 int       WINPTHREAD_API pthread_set_concurrency(int val);
 void      WINPTHREAD_API pthread_exit(void *res);
 void      WINPTHREAD_API _pthread_invoke_cancel(void);
-void      WINPTHREAD_API pthread_testcancel(void);
 int       WINPTHREAD_API pthread_cancel(pthread_t t);
 int       WINPTHREAD_API pthread_kill(pthread_t t, int sig);
 unsigned  WINPTHREAD_API _pthread_get_state(const pthread_attr_t *attr, unsigned flag);