message: Removed duplicated shadowsocks Logger
  fix
diff: @@ -45,22 +45,18 @@ pub fn init_with_config(bin_name: &str, matches: &ArgMatches) {
  0 => logging_builder
  .logger(Logger::builder().build(bin_name, LevelFilter::Info))
  .logger(Logger::builder().build("shadowsocks", LevelFilter::Info))
  - .logger(Logger::builder().build("shadowsocks", LevelFilter::Info))
  .build(Root::builder().appender("console").build(LevelFilter::Off)),
  1 => logging_builder
  .logger(Logger::builder().build(bin_name, LevelFilter::Debug))
  .logger(Logger::builder().build("shadowsocks", LevelFilter::Debug))
  - .logger(Logger::builder().build("shadowsocks", LevelFilter::Debug))
  .build(Root::builder().appender("console").build(LevelFilter::Off)),
  2 => logging_builder
  .logger(Logger::builder().build(bin_name, LevelFilter::Trace))
  .logger(Logger::builder().build("shadowsocks", LevelFilter::Trace))
  - .logger(Logger::builder().build("shadowsocks", LevelFilter::Trace))
  .build(Root::builder().appender("console").build(LevelFilter::Off)),
  3 => logging_builder
  .logger(Logger::builder().build(bin_name, LevelFilter::Trace))
  .logger(Logger::builder().build("shadowsocks", LevelFilter::Trace))
  - .logger(Logger::builder().build("shadowsocks", LevelFilter::Trace))
  .build(Root::builder().appender("console").build(LevelFilter::Debug)),
  _ => logging_builder.build(Root::builder().appender("console").build(LevelFilter::Trace)),
  }
  