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diff --git a/mysql/mysql/service_thd_wait.h b/mysql/mysql/service_thd_wait.h
deleted file mode 100644
index 62f2ea4..0000000
--- a/mysql/mysql/service_thd_wait.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; version 2 of the License.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
-
-#ifndef MYSQL_SERVICE_THD_WAIT_INCLUDED
-#define MYSQL_SERVICE_THD_WAIT_INCLUDED
-
-/**
-  @file include/mysql/service_thd_wait.h
-  This service provides functions for plugins and storage engines to report
-  when they are going to sleep/stall.
-  
-  SYNOPSIS
-  thd_wait_begin() - call just before a wait begins
-  thd                     Thread object
-                          Use NULL if the thd is NOT known.
-  wait_type               Type of wait
-                          1 -- short wait (e.g. for mutex)
-                          2 -- medium wait (e.g. for disk io)
-                          3 -- large wait (e.g. for locked row/table)
-  NOTES
-    This is used by the threadpool to have better knowledge of which
-    threads that currently are actively running on CPUs. When a thread
-    reports that it's going to sleep/stall, the threadpool scheduler is
-    free to start another thread in the pool most likely. The expected wait
-    time is simply an indication of how long the wait is expected to
-    become, the real wait time could be very different.
-
-  thd_wait_end() called immediately after the wait is complete
-
-  thd_wait_end() MUST be called if thd_wait_begin() was called.
-
-  Using thd_wait_...() service is optional but recommended.  Using it will
-  improve performance as the thread pool will be more active at managing the
-  thread workload.
-*/
-
-#ifdef __cplusplus
-class THD;
-#define MYSQL_THD THD*
-#else
-#define MYSQL_THD void*
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
-  One should only report wait events that could potentially block for a
-  long time. A mutex wait is too short of an event to report. The reason
-  is that an event which is reported leads to a new thread starts
-  executing a query and this has a negative impact of usage of CPU caches
-  and thus the expected gain of starting a new thread must be higher than
-  the expected cost of lost performance due to starting a new thread.
-
-  Good examples of events that should be reported are waiting for row locks
-  that could easily be for many milliseconds or even seconds and the same
-  holds true for global read locks, table locks and other meta data locks.
-  Another event of interest is going to sleep for an extended time.
-
-  Note that user-level locks no longer use THD_WAIT_USER_LOCK wait type.
-  Since their implementation relies on metadata locks manager it uses
-  THD_WAIT_META_DATA_LOCK instead.
-*/
-typedef enum _thd_wait_type_e {
-  THD_WAIT_SLEEP= 1,
-  THD_WAIT_DISKIO= 2,
-  THD_WAIT_ROW_LOCK= 3,
-  THD_WAIT_GLOBAL_LOCK= 4,
-  THD_WAIT_META_DATA_LOCK= 5,
-  THD_WAIT_TABLE_LOCK= 6,
-  THD_WAIT_USER_LOCK= 7,
-  THD_WAIT_BINLOG= 8,
-  THD_WAIT_GROUP_COMMIT= 9,
-  THD_WAIT_SYNC= 10,
-  THD_WAIT_LAST= 11
-} thd_wait_type;
-
-extern struct thd_wait_service_st {
-  void (*thd_wait_begin_func)(MYSQL_THD, int);
-  void (*thd_wait_end_func)(MYSQL_THD);
-} *thd_wait_service;
-
-#ifdef MYSQL_DYNAMIC_PLUGIN
-
-#define thd_wait_begin(_THD, _WAIT_TYPE) \
-  thd_wait_service->thd_wait_begin_func(_THD, _WAIT_TYPE)
-#define thd_wait_end(_THD) thd_wait_service->thd_wait_end_func(_THD)
-
-#else
-
-void thd_wait_begin(MYSQL_THD thd, int wait_type);
-void thd_wait_end(MYSQL_THD thd);
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-