remove obsolete code

hermit-sys/Cargo.toml

@@ -38,7 +38,6 @@ trace = []
 vga = []
 
 [dependencies]
-log = { version = "0.4", default-features = false }
 libm = { version = "0.2", default-features = false }
 
 rftrace = { version = "0.1", optional = true, features = ["autokernel", "buildcore", "interruptsafe"] }

hermit-sys/src/lib.rs

@@ -1,49 +1,13 @@
 #![allow(clippy::large_enum_variant)]
 #![allow(clippy::new_ret_no_self)]
 
-#[macro_use]
-extern crate log;
-
 mod cmath;
 #[cfg(not(feature = "tcp"))]
 mod dummy;
 
-use log::{set_logger, set_max_level, LevelFilter, Metadata, Record};
-
-/// Data structure to filter kernel messages
-struct SysLogger;
-
-impl log::Log for SysLogger {
-	fn enabled(&self, _: &Metadata) -> bool {
-		true
-	}
-
-	fn flush(&self) {
-		// nothing to do
-	}
-
-	fn log(&self, record: &Record) {
-		if self.enabled(record.metadata()) {
-			println!("[{}] {}", record.level(), record.args());
-		}
-	}
-}
-
 #[no_mangle]
 pub extern "C" fn sys_network_init() -> i32 {
-	set_logger(&SysLogger).expect("Can't initialize logger");
-	// Determines LevelFilter at compile time
-	let log_level: Option<&'static str> = option_env!("HERMIT_LOG_LEVEL_FILTER");
-	let max_level: LevelFilter = match log_level {
-		Some("Error") => LevelFilter::Error,
-		Some("Debug") => LevelFilter::Debug,
-		Some("Off") => LevelFilter::Off,
-		Some("Trace") => LevelFilter::Trace,
-		Some("Warn") => LevelFilter::Warn,
-		Some("Info") => LevelFilter::Info,
-		_ => LevelFilter::Info,
-	};
-	set_max_level(max_level);
+	// nothing to do
 
 	0
 }