Revert "Merge seastar upstream"
Revert "Merge seastar upstream"

This reverts commit f301c678bfe5eb5df71f71fd20e08b422b1023bb; the rpc changes
don't compile due to rpc timeout type change.

scylladb/scylla,avikivity/scylla,duarten/scylla,duarten/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,duarten/scylla,avikivity/scylla