Remove unused code

netfetch/src/ca/conn.rs

@@ -1423,6 +1423,7 @@ impl CaConn {
             if let ChannelState::MakingSeriesWriter(st2) = &mut conf.state {
                 let dt = stnow.duration_since(SystemTime::UNIX_EPOCH).unwrap();
                 let beg = TsNano::from_ns(SEC * dt.as_secs() + dt.subsec_nanos() as u64);
+                let a = &conf.conf.min_quiets();
                 let binwriter = BinWriter::new(
                     beg,
                     RetentionTime::Short,