Remove some browser leftovers (#9636)

As we have removed the feature for now, we don't need this here as well.

Co-authored-by: Giles Cope <[email protected]>

client/tracing/Cargo.toml

@@ -35,7 +35,3 @@ sp-core = { version = "4.0.0-dev", path = "../../primitives/core" }
 sc-client-api = { version = "4.0.0-dev", path = "../api" }
 sc-tracing-proc-macro = { version = "4.0.0-dev", path = "./proc-macro" }
 sc-rpc-server = { version = "4.0.0-dev", path = "../rpc-servers" }
-
-[target.'cfg(target_os = "unknown")'.dependencies]
-wasm-bindgen = "0.2.67"
-web-sys = { version = "0.3.44", features = ["console"] }

client/tracing/src/logging/mod.rs

@@ -177,26 +177,16 @@ where
 	};
 	let builder = FmtSubscriber::builder().with_env_filter(env_filter);
 
-	#[cfg(not(target_os = "unknown"))]
 	let builder = builder.with_span_events(format::FmtSpan::NONE);
 
-	#[cfg(not(target_os = "unknown"))]
 	let builder = builder.with_writer(std::io::stderr as _);
 
-	#[cfg(target_os = "unknown")]
-	let builder = builder.with_writer(std::io::sink);
-
-	#[cfg(not(target_os = "unknown"))]
 	let builder = builder.event_format(event_format);
 
-	#[cfg(not(target_os = "unknown"))]
 	let builder = builder_hook(builder);
 
 	let subscriber = builder.finish().with(PrefixLayer);
 
-	#[cfg(target_os = "unknown")]
-	let subscriber = subscriber.with(ConsoleLogLayer::new(event_format));
-
 	Ok(subscriber)
 }