Remove cap-async-std. #1801

Job	Run time
Check Cross-Compilation (beta)	1m 43s
Check Cross-Compilation (stable)	1m 49s
Check Cross-Compilation on Windows (stable)	2m 27s
Check Cross-Compilation on Windows (beta)	1m 41s
Rustfmt	7s
Test with Rust nightly (windows)	2m 18s
Test with Rust nightly (ubuntu)	30s
Test on Musl (ubuntu)	48s
Test (msrv)	4m 8s
Test linux-raw support (ubuntu)	30s
Test (stable)	28s
Test linux-raw support (ubuntu-22.04)	31s
Check Cross-Compilation on Rust nightly on Windows (nightly)	2m 4s
Test (windows-2022)	1m 55s
Fuzz Targets	48s
Test (aarch64-ubuntu)	4m 15s
Test (beta)	32s
Test (ubuntu-22.04)	31s
Check Cross-Compilation on Rust nightly (nightly)	3m 49s
Test (windows-latest)	2m 32s
Test (macos-latest)	44s
Test (macos-13)	1m 23s
	35m 33s

Provide feedback