Remove substrate-in-the-browser (#9541)

* Comment out browser stuff

* Remove browser stuff

* Remove more wasm transport code

* Remove ExtTransport and rework how telemetry initialises.

* Change (most) wasm-timer using code to use std::time

* Rename CI-job

* Aura does not compile for wasm

* Remove testing in the browser on CI

* Update README

* Leave `StreamSink` be

* fmt

substrate/client/consensus/common/src/import_queue.rs

@@ -265,7 +265,7 @@ pub(crate) async fn import_single_block_metered<
 		r => return Ok(r), // Any other successful result means that the block is already imported.
 	}
 
-	let started = wasm_timer::Instant::now();
+	let started = std::time::Instant::now();
 
 	let mut import_block = BlockImportParams::new(block_origin, header);
 	import_block.body = block.body;