storage_proxy: remove unused variable
storage_proxy: remove unused variable

phonkee/scylla,raphaelsc/scylla,glommer/scylla,duarten/scylla,aruanruan/scylla,rentongzhang/scylla,linearregression/scylla,rluta/scylla,senseb/scylla,wildinto/scylla,scylladb/scylla,duarten/scylla,tempbottle/scylla,kangkot/scylla,respu/scylla,dwdm/scylla,rluta/scylla,gwicke/scylla,victorbriz/scylla,scylladb/scylla,senseb/scylla,tempbottle/scylla,rentongzhang/scylla,justintung/scylla,tempbottle/scylla,dwdm/scylla,respu/scylla,eklitzke/scylla,bowlofstew/scylla,kjniemi/scylla,gwicke/scylla,eklitzke/scylla,dwdm/scylla,shaunstanislaus/scylla,linearregression/scylla,scylladb/scylla,guiquanz/scylla,victorbriz/scylla,stamhe/scylla,eklitzke/scylla,capturePointer/scylla,avikivity/scylla,phonkee/scylla,asias/scylla,senseb/scylla,kjniemi/scylla,avikivity/scylla,glommer/scylla,wildinto/scylla,bowlofstew/scylla,respu/scylla,asias/scylla,rentongzhang/scylla,avikivity/scylla,shaunstanislaus/scylla,wildinto/scylla,guiquanz/scylla,justintung/scylla,scylladb/scylla,duarten/scylla,stamhe/scylla,raphaelsc/scylla,capturePointer/scylla,aruanruan/scylla,asias/scylla,acbellini/scylla,acbellini/scylla,rluta/scylla,justintung/scylla,capturePointer/scylla,raphaelsc/scylla,shaunstanislaus/scylla,bowlofstew/scylla,glommer/scylla,phonkee/scylla,stamhe/scylla,acbellini/scylla,victorbriz/scylla,aruanruan/scylla,kangkot/scylla,gwicke/scylla,guiquanz/scylla,kjniemi/scylla,linearregression/scylla,kangkot/scylla