cpal

Remove asmjs-unknown-emscripten #801

Job	Run time
clippy-test	48s
ubuntu-test	26s
asmjs-wasm32-test (wasm32-unknown-emscripten)	47s
wasm32-bindgen-test (wasm32-unknown-unknown)	19s
wasm32-wasi-test (wasm32-wasi)	20s
cargo-publish	0s
android-apk-build	1m 21s
android-check	34s
windows-test (x86_64)	3m 38s
ios-build	2m 35s
macos-test	1m 35s
windows-test (i686)	3m 43s
rustfmt-check	4s
wasm-beep-build	18s
linux-check-and-test-armv7	1m 36s
	18m 4s

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