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/informant/src/display.rs

@@ -25,8 +25,8 @@ use sp_runtime::traits::{Block as BlockT, CheckedDiv, NumberFor, Saturating, Zer
 use std::{
 	convert::{TryFrom, TryInto},
 	fmt,
+	time::Instant,
 };
-use wasm_timer::Instant;
 
 /// State of the informant display system.
 ///