GCC-14 rightfully points out:
```
/var/ssd/scylladb/mutation/mutation_rebuilder.hh: In member function ‘const mutation& mutation_rebuilder::consume_new_partition(const dht::decorated_key&)’:
/var/ssd/scylladb/mutation/mutation_rebuilder.hh:24:36: error: redundant move in initialization [-Werror=redundant-move]
24 | _m = mutation(_s, std::move(dk)); | ~~~~~~~~~^~~~
/var/ssd/scylladb/mutation/mutation_rebuilder.hh:24:36: note: remove ‘std::move’ call
```
as `dk` is passed with a const reference, `std::move()` does not help
the callee to consume from it. so drop the `std::move()` here.
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#19188
58edee8d93