winpthreads: remove ref.c and ref.h

Internal header file ref.h does not declare any functions.
Likewise, ref.c does not define any functions.

Signed-off-by: Kirill Makurin <maiddaisuki@outlook.com>
Signed-off-by: LIU Hao <lh_mouse@126.com>
diff --git a/mingw-w64-libraries/winpthreads/Makefile.am b/mingw-w64-libraries/winpthreads/Makefile.am
index 8fbdda9..0bcff1a 100644
--- a/mingw-w64-libraries/winpthreads/Makefile.am
+++ b/mingw-w64-libraries/winpthreads/Makefile.am
@@ -22,7 +22,6 @@
   src/misc.c      src/misc.h    \
   src/mutex.c                   \
   src/nanosleep.c               \
-  src/ref.c       src/ref.h     \
   src/rwlock.c    src/rwlock.h  \
   src/sem.c       src/sem.h     \
   src/spinlock.c                \
diff --git a/mingw-w64-libraries/winpthreads/src/barrier.c b/mingw-w64-libraries/winpthreads/src/barrier.c
index f3b5c46..13e38a2 100644
--- a/mingw-w64-libraries/winpthreads/src/barrier.c
+++ b/mingw-w64-libraries/winpthreads/src/barrier.c
@@ -25,8 +25,8 @@
 #include <stdio.h>
 #include <malloc.h>
 #include "pthread.h"
+#include "semaphore.h"
 #include "barrier.h"
-#include "ref.h"
 #include "misc.h"
 
 static pthread_spinlock_t barrier_global = PTHREAD_SPINLOCK_INITIALIZER;
diff --git a/mingw-w64-libraries/winpthreads/src/cond.c b/mingw-w64-libraries/winpthreads/src/cond.c
index b0ff65b..ea49255 100644
--- a/mingw-w64-libraries/winpthreads/src/cond.c
+++ b/mingw-w64-libraries/winpthreads/src/cond.c
@@ -30,7 +30,6 @@
 #include <time.h>
 #include "pthread.h"
 #include "pthread_time.h"
-#include "ref.h"
 #include "cond.h"
 #include "thread.h"
 #include "misc.h"
diff --git a/mingw-w64-libraries/winpthreads/src/ref.c b/mingw-w64-libraries/winpthreads/src/ref.c
deleted file mode 100644
index 0344d45..0000000
--- a/mingw-w64-libraries/winpthreads/src/ref.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
-   Copyright (c) 2011-2016  mingw-w64 project
-
-   Permission is hereby granted, free of charge, to any person obtaining a
-   copy of this software and associated documentation files (the "Software"),
-   to deal in the Software without restriction, including without limitation
-   the rights to use, copy, modify, merge, publish, distribute, sublicense,
-   and/or sell copies of the Software, and to permit persons to whom the
-   Software is furnished to do so, subject to the following conditions:
-
-   The above copyright notice and this permission notice shall be included in
-   all copies or substantial portions of the Software.
-
-   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-   DEALINGS IN THE SOFTWARE.
-*/
-
-#include <windows.h>
-#include <winternl.h>
-#include <stdio.h>
-#include "pthread.h"
-#include "semaphore.h"
-#include "rwlock.h"
-#include "cond.h"
-#include "barrier.h"
-#include "sem.h"
-#include "ref.h"
-#include "misc.h"
-
diff --git a/mingw-w64-libraries/winpthreads/src/ref.h b/mingw-w64-libraries/winpthreads/src/ref.h
deleted file mode 100644
index 5ca6750..0000000
--- a/mingw-w64-libraries/winpthreads/src/ref.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
-   Copyright (c) 2011-2016  mingw-w64 project
-
-   Permission is hereby granted, free of charge, to any person obtaining a
-   copy of this software and associated documentation files (the "Software"),
-   to deal in the Software without restriction, including without limitation
-   the rights to use, copy, modify, merge, publish, distribute, sublicense,
-   and/or sell copies of the Software, and to permit persons to whom the
-   Software is furnished to do so, subject to the following conditions:
-
-   The above copyright notice and this permission notice shall be included in
-   all copies or substantial portions of the Software.
-
-   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-   DEALINGS IN THE SOFTWARE.
-*/
-
-#ifndef WIN_PTHREADS_REF_H
-#define WIN_PTHREADS_REF_H
-#include "pthread.h"
-#include "semaphore.h"
-
-#endif
-
diff --git a/mingw-w64-libraries/winpthreads/src/rwlock.c b/mingw-w64-libraries/winpthreads/src/rwlock.c
index 7a4e583..0bdfe41 100644
--- a/mingw-w64-libraries/winpthreads/src/rwlock.c
+++ b/mingw-w64-libraries/winpthreads/src/rwlock.c
@@ -26,7 +26,6 @@
 #include <malloc.h>
 #include "pthread.h"
 #include "thread.h"
-#include "ref.h"
 #include "rwlock.h"
 #include "misc.h"
 
diff --git a/mingw-w64-libraries/winpthreads/src/sem.c b/mingw-w64-libraries/winpthreads/src/sem.c
index 340ff69..990f10c 100644
--- a/mingw-w64-libraries/winpthreads/src/sem.c
+++ b/mingw-w64-libraries/winpthreads/src/sem.c
@@ -28,7 +28,6 @@
 #include "misc.h"
 #include "semaphore.h"
 #include "sem.h"
-#include "ref.h"
 
 int do_sema_b_wait_intern (HANDLE sema, int nointerrupt, DWORD timeout);
 
@@ -350,5 +349,5 @@
 
   *sval = (int) sv->value;
   pthread_mutex_unlock (&sv->vlock);
-  return 0;  
+  return 0;
 }