Remove cap-async-std. #1806

Job	Run time
Rustfmt	12s
Check Cross-Compilation on Windows (stable)	2m 3s
Check Cross-Compilation on Rust nightly on Windows (nightly)	1m 47s
Check Cross-Compilation on Windows (beta)	1m 47s
Check Cross-Compilation (stable)	1m 43s
Test on Musl (ubuntu)	1m 3s
Check Cross-Compilation on Rust nightly (nightly)	2m 25s
Check Cross-Compilation (beta)	1m 30s
Test (msrv)	4m 0s
Fuzz Targets	57s
Test (aarch64-ubuntu)	2m 48s
Test (windows-latest)	2m 12s
Test with Rust nightly (windows)	2m 3s
Test (beta)	33s
Test linux-raw support (ubuntu-22.04)	34s
Test (ubuntu-22.04)	38s
Test with Rust nightly (ubuntu)	34s
Test (macos-13)	1s
Test (windows-2022)	1m 52s
Test (stable)	28s
Test (macos-latest)	47s
Test linux-raw support (ubuntu)	33s
	30m 30s

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