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/network/src/peer_info.rs

@@ -40,9 +40,8 @@ use std::{
 	error, io,
 	pin::Pin,
 	task::{Context, Poll},
-	time::Duration,
+	time::{Duration, Instant},
 };
-use wasm_timer::Instant;
 
 /// Time after we disconnect from a node before we purge its information from the cache.
 const CACHE_EXPIRE: Duration = Duration::from_secs(10 * 60);