Run deletion compaction also in non-clustered mode

ANTIETCD.md

@@ -148,7 +148,6 @@ for every change and returning a new value or undefined to skip persistence.</dd
 const AntiEtcd = require('antietcd');
 
 // Configuration may contain all the same options like in CLI, without "--"
-// Except that persist_filter should be a callback (key, value) => newValue
 const srv = new AntiEtcd({ ...configuration });
 
 // Start server