vmstate: Drop unused post_save handler

No device makes use of it anymore.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/hw.h

@@ -321,7 +321,6 @@ struct VMStateDescription {
     int (*pre_load)(void *opaque);
     int (*post_load)(void *opaque, int version_id);
     void (*pre_save)(void *opaque);
-    void (*post_save)(void *opaque);
     VMStateField *fields;
 };
 

savevm.c

@@ -1231,9 +1231,6 @@ void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
         }
         field++;
     }
-    if (vmsd->post_save) {
-        vmsd->post_save(opaque);
-    }
 }
 
 static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id)