Removes all elements in the sorted set stored at key with rank between start
and stop.
Both start and stop are 0 -based indexes with 0 being the element with
the lowest score.
These indexes can be negative numbers, where they indicate offsets starting at
the element with the highest score.
For example: -1 is the element with the highest score, -2 the element with
the second highest score and so forth.
*Return value
Integer reply: the number of elements removed.
*Examples
redis>
ZADD myzset 1 "one"
(integer) 1redis> ZADD myzset 2 "two"
(integer) 1redis> ZADD myzset 3 "three"
(integer) 1redis> ZREMRANGEBYRANK myzset 0 1
(integer) 2redis> ZRANGE myzset 0 -1 WITHSCORES
1) "three" 2) "3"