Windows : Do not use CRT routine to dump memory leaks.

Its output is useless,and, in case of large output, it also may prevent
with search_pattern_in_file.inc from working.

Author: vaintroub

mysys/my_init.c

@@ -200,7 +200,6 @@ Voluntary context switches %ld, Involuntary context switches %ld\n",
    _CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
    _CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
    _CrtCheckMemory();
-   _CrtDumpMemoryLeaks();
 #endif
   }