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/.gitlab-ci.yml

@@ -391,17 +391,11 @@ test-linux-stable-int:
     paths:
       - ${CI_COMMIT_SHORT_SHA}_int_failure.log
 
-check-web-wasm:
+check-tracing:
   stage:                           test
   <<:                              *docker-env
   <<:                              *test-refs
   script:
-    # WASM support is in progress. As more and more crates support WASM, we
-    # should add entries here. See https://github.com/paritytech/substrate/issues/2416
-    # Note: we don't need to test crates imported in `bin/node/cli`
-    - time cargo build --manifest-path=client/consensus/aura/Cargo.toml --target=wasm32-unknown-unknown --features getrandom
-    # Note: the command below is a bit weird because several Cargo issues prevent us from compiling the node in a more straight-forward way.
-    - time cargo +nightly build --manifest-path=bin/node/cli/Cargo.toml --no-default-features --features browser --target=wasm32-unknown-unknown
     # with-tracing must be explicitly activated, we run a test to ensure this works as expected in both cases
     - time cargo +nightly test --manifest-path primitives/tracing/Cargo.toml --no-default-features
     - time cargo +nightly test --manifest-path primitives/tracing/Cargo.toml --no-default-features --features=with-tracing
@@ -459,21 +453,6 @@ check-polkadot-companion-build:
     - cd polkadot && git rev-parse --abbrev-ref HEAD
   allow_failure:                   true
 
-test-browser-node:
-  stage:                           build
-  <<:                              *docker-env
-  <<:                              *test-refs
-  needs:
-    - job:                         check-web-wasm
-      artifacts:                   false
-  variables:
-    <<:                                         *default-vars
-    CHROMEDRIVER_ARGS:                          "--log-level=INFO --whitelisted-ips=127.0.0.1"
-    CARGO_TARGET_WASM32_UNKNOWN_UNKNOWN_RUNNER: "wasm-bindgen-test-runner"
-    WASM_BINDGEN_TEST_TIMEOUT:                  120
-  script:
-    - cargo +nightly test --target wasm32-unknown-unknown -p node-browser-testing
-
 build-linux-substrate:             &build-binary
   stage:                           build
   <<:                              *collect-artifacts