remove unsupported service file

include/mysql/service_my_plugin_log.h

-/*  Copyright (c) 2011, 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 */
-
-/**
-  @file
-  This service provides functions to report error conditions and log to 
-  mysql error log.
-*/
-
-#ifndef MYSQL_SERVICE_MY_PLUGIN_LOG_INCLUDED
-#define MYSQL_SERVICE_MY_PLUGIN_LOG_INCLUDED
-
-#ifndef MYSQL_ABI_CHECK
-#include <stdarg.h>
-#endif
-
-/* keep in sync with the loglevel enum in my_sys.h */
-enum plugin_log_level
-{
-  MY_ERROR_LEVEL,
-  MY_WARNING_LEVEL,
-  MY_INFORMATION_LEVEL
-};  
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-extern struct my_plugin_log_service
-{
-  /** write a message to the log */
-  int (*my_plugin_log_message)(MYSQL_PLUGIN *, enum plugin_log_level, const char *, ...);
-} *my_plugin_log_service;
-
-#ifdef MYSQL_DYNAMIC_PLUGIN
-
-#define my_plugin_log_message my_plugin_log_service->my_plugin_log_message
-
-#else
-
-int my_plugin_log_message(MYSQL_PLUGIN *plugin, enum plugin_log_level level,
-                          const char *format, ...);
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif