After introducing GCRA algorithm into redis
https://github.com/redis/redis/pull/14826 and subsequent introduction of
new RATE_LIMIT object type - https://github.com/redis/redis/pull/14905.
It was internally decided not to introduce GCRA into the new release.
As still no decision is made on whether it will be kept or not in the
future, this PR only makes the code related to GCRA dead - commands are
inaccessible and AOF/RDB load+save is disabled.
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Co-authored-by: debing.sun <debing.sun@redis.com>
