replay: remove host_clock_last

Fixes: a02fe2c (replay: Remove host_clock_last)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231211091346.14616-7-alex.bennee@linaro.org>

replay/replay-internal.h

@@ -80,8 +80,6 @@ typedef struct ReplayState {
         This counter is global, because requests from different
         block devices should not get overlapping ids. */
     uint64_t block_request_id;
-    /*! Prior value of the host clock */
-    uint64_t host_clock_last;
     /*! Asynchronous event id read from the log */
     uint64_t read_event_id;
 } ReplayState;