MT#55283 remove non existing function from .h

Change-Id: I3b82f180e9cececbdbd63998c2dbd32dca45dbfe

include/redis.h

@@ -110,7 +110,6 @@ struct redis *redis_new(const endpoint_t *, int, const char *, enum redis_role,
 struct redis *redis_dup(const struct redis *r, int db);
 void redis_close(struct redis *r);
 int redis_restore(struct redis *, bool foreign, int db);
-void redis_update(struct call *, struct redis *);
 void redis_update_onekey(struct call *c, struct redis *r);
 void redis_delete(struct call *, struct redis *);
 void redis_wipe(struct redis *);