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/Cargo.toml

@@ -6,7 +6,6 @@ members = [
 	"bin/node-template/pallets/template",
 	"bin/node-template/runtime",
 	"bin/node/bench",
-	"bin/node/browser-testing",
 	"bin/node/cli",
 	"bin/node/test-runner-example",
 	"bin/node/executor",
@@ -192,7 +191,6 @@ members = [
 	"test-utils/runtime/transaction-pool",
 	"test-utils/test-runner",
 	"test-utils/test-crate",
-	"utils/browser",
 	"utils/build-script-utils",
 	"utils/fork-tree",
 	"utils/frame/benchmarking-cli",