core: remove unused structure future_task
core: remove unused structure future_task

phonkee/scylla,respu/scylla,rentongzhang/scylla,scylladb/scylla,xtao/seastar,dreamsxin/seastar,joerg84/seastar,stamhe/seastar,dwdm/seastar,asias/scylla,ducthangho/imdb,rentongzhang/scylla,avikivity/seastar,flashbuckets/seastar,scylladb/seastar,chunshengster/seastar,ducthangho/imdb,kangkot/scylla,respu/scylla,asias/scylla,bzero/seastar,acbellini/scylla,aruanruan/scylla,koolhazz/seastar,rluta/scylla,stamhe/scylla,bowlofstew/scylla,victorbriz/scylla,avikivity/scylla,kjniemi/seastar,printedheart/seastar,aruanruan/scylla,scylladb/scylla-seastar,kangkot/scylla,koolhazz/seastar,linearregression/seastar,stamhe/seastar,jonathanleang/seastar,raphaelsc/scylla,raphaelsc/scylla,avikivity/scylla,mixja/seastar,koolhazz/seastar,scylladb/scylla-seastar,bzero/seastar,shyamalschandra/seastar,glommer/scylla,glommer/scylla,justintung/scylla,bowlofstew/seastar,acbellini/seastar,scylladb/seastar,guiquanz/scylla,mixja/seastar,tempbottle/scylla,jonathanleang/seastar,hongliangzhao/seastar,gwicke/scylla,acbellini/seastar,victorbriz/scylla,capturePointer/scylla,wildinto/scylla,phonkee/scylla,kjniemi/scylla,duarten/scylla,kjniemi/scylla,sjperkins/seastar,shaunstanislaus/scylla,printedheart/seastar,sjperkins/seastar,wildinto/seastar,senseb/scylla,mixja/seastar,cloudius-systems/seastar,wildinto/scylla,raphaelsc/scylla,victorbriz/scylla,eklitzke/scylla,scylladb/scylla-seastar,norcimo5/seastar,linearregression/scylla,printedheart/seastar,syuu1228/seastar,capturePointer/scylla,syuu1228/seastar,joerg84/seastar,xtao/seastar,respu/scylla,wildinto/seastar,linearregression/seastar,dwdm/scylla,shaunstanislaus/scylla,rluta/scylla,bowlofstew/seastar,avikivity/scylla,tempbottle/seastar,rentongzhang/scylla,justintung/scylla,dwdm/seastar,shyamalschandra/seastar,bowlofstew/seastar,dreamsxin/seastar,guiquanz/scylla,leejir/seastar,tempbottle/scylla,gwicke/scylla,xtao/seastar,scylladb/scylla,gwicke/scylla,scylladb/scylla,bowlofstew/scylla,rluta/scylla,flashbuckets/seastar,chunshengster/seastar,hongliangzhao/seastar,wildinto/seastar,wildinto/scylla,anzihenry/seastar,senseb/scylla,capturePointer/scylla,anzihenry/seastar,stamhe/seastar,dreamsxin/seastar,shyamalschandra/seastar,dwdm/seastar,anzihenry/seastar,acbellini/scylla,leejir/seastar,glommer/scylla,jonathanleang/seastar,kjniemi/seastar,kangkot/scylla,shaunstanislaus/scylla,bowlofstew/scylla,scylladb/seastar,linearregression/seastar,dwdm/scylla,tempbottle/seastar,dwdm/scylla,norcimo5/seastar,avikivity/seastar,ducthangho/imdb,linearregression/scylla,justintung/scylla,tempbottle/scylla,asias/scylla,cloudius-systems/seastar,eklitzke/scylla,joerg84/seastar,acbellini/seastar,kjniemi/scylla,sjperkins/seastar,kjniemi/seastar,stamhe/scylla,avikivity/seastar,bzero/seastar,tempbottle/seastar,linearregression/scylla,phonkee/scylla,hongliangzhao/seastar,stamhe/scylla,cloudius-systems/seastar,flashbuckets/seastar,senseb/scylla,syuu1228/seastar,scylladb/scylla,duarten/scylla,acbellini/scylla,guiquanz/scylla,leejir/seastar,chunshengster/seastar,eklitzke/scylla,duarten/scylla,aruanruan/scylla,norcimo5/seastar