gossip: Drop gms/token_serializer.hh
gossip: Drop gms/token_serializer.hh

It is unused.

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