monitor: uninclude cpu_ldst

This header is non-needed anymore and wont work in multi-arch where
this service is not provided to core code.

Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: NPeter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <4e96622ab5320603829b6f94b8c4e94d573d34fc.1441614289.git.crosthwaite.peter@gmail.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

monitor.c

@@ -68,7 +68,6 @@
 #include "trace/simple.h"
 #endif
 #include "exec/memory.h"
-#include "exec/cpu_ldst.h"
 #include "qmp-commands.h"
 #include "hmp.h"
 #include "qemu/thread.h"