replay: Remove host_clock_last

Now we're not using the 'last' field in the timer, remove it from
replay.

Bump the version number of the replay structure since we've
removed the field.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20190724115823.4199-4-dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

replay/replay-snapshot.c

@@ -23,7 +23,6 @@ static int replay_pre_save(void *opaque)
 {
     ReplayState *state = opaque;
     state->file_offset = ftell(replay_file);
-    state->host_clock_last = qemu_clock_get_last(QEMU_CLOCK_HOST);
 
     return 0;
 }
@@ -33,7 +32,6 @@ static int replay_post_load(void *opaque, int version_id)
     ReplayState *state = opaque;
     if (replay_mode == REPLAY_MODE_PLAY) {
         fseek(replay_file, state->file_offset, SEEK_SET);
-        qemu_clock_set_last(QEMU_CLOCK_HOST, state->host_clock_last);
         /* If this was a vmstate, saved in recording mode,
            we need to initialize replay data fields. */
         replay_fetch_data_kind();
@@ -49,8 +47,8 @@ static int replay_post_load(void *opaque, int version_id)
 
 static const VMStateDescription vmstate_replay = {
     .name = "replay",
-    .version_id = 1,
-    .minimum_version_id = 1,
+    .version_id = 2,
+    .minimum_version_id = 2,
     .pre_save = replay_pre_save,
     .post_load = replay_post_load,
     .fields = (VMStateField[]) {
@@ -61,7 +59,6 @@ static const VMStateDescription vmstate_replay = {
         VMSTATE_UINT32(has_unread_data, ReplayState),
         VMSTATE_UINT64(file_offset, ReplayState),
         VMSTATE_UINT64(block_request_id, ReplayState),
-        VMSTATE_UINT64(host_clock_last, ReplayState),
         VMSTATE_INT32(read_event_kind, ReplayState),
         VMSTATE_UINT64(read_event_id, ReplayState),
         VMSTATE_INT32(read_event_checkpoint, ReplayState),