Remove wasm-test.sh (not invoked in CI)

We build-test wasm in CI, and nothing runs this script.

Ideally, in the future, we should run wasm tests in CI, such as via
wasmtime.

wasm-test.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-
-wasm-pack test --chrome --headless -- --features unstable --test buf_writer
-wasm-pack test --chrome --headless -- --features unstable --test channel
-wasm-pack test --chrome --headless -- --features unstable --test condvar
-wasm-pack test --chrome --headless -- --features unstable --test mutex
-wasm-pack test --chrome --headless -- --features unstable --test rwlock
-wasm-pack test --chrome --headless -- --features unstable --test stream
-wasm-pack test --chrome --headless -- --features unstable --test task_local
-wasm-pack test --chrome --headless -- --features unstable --test timeout