qmp: do not include monitor.h from qapi-types-core.h

The comment is stale, monitor.h is not needed anymore (only qerror.h
is, because it contains the schema for errors).
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>

qapi/qapi-types-core.h

@@ -16,8 +16,6 @@
 
 #include "qemu-common.h"
 #include "error.h"
-
-/* FIXME this is temporary until we remove middle mode */
-#include "monitor.h"
+#include "qerror.h"
 
 #endif