clean up mess in compaction_daemon

compaction daemon reads key

{node, node(), autocompaction} but doesn't listen to it
also it reads key compaction_daemon but doesn't listen to it, listening to {node, node(), compaction_daemon} only

It does look like nobody ever used {node, node(), autocompaction}

. It is not exposed via UI and compaction_daemon will not pick up value if it changed

So:
1. consider removing

{node, node(), autocompaction}

support
2. consider moving global autocompaction key to chronicle and properly upgrading it with magma fragmentation setting