ci: Remove workaround for fixed AArch64 Linux runner bug #3009

Job	Run time
cargo minimal-versions build	27s
cargo +1.36 build (futures-{core, io, sink})	48s
cargo +stable build	39s
cargo test (ubuntu-latest)	2m 43s
cargo test (macos-latest)	6m 9s
cargo +beta build	38s
cargo +1.63 build	1m 12s
cargo bench	45s
cargo test (windows-latest)	5m 0s
cargo +nightly build	36s
cargo test (ubuntu-24.04-arm)	3m 3s
cargo clippy	23s
cargo test (ubuntu-latest, armv7-unknown-linux-gnueabihf)	7m 1s
cargo doc	18s
cargo hack check --feature-powerset	2m 30s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	6m 19s
cargo fmt	12s
cargo miri test	10m 23s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 28s
cargo build --target thumbv7m-none-eabi	30s
cargo build --target thumbv6m-none-eabi	24s
cargo test -Z sanitizer=address	3m 25s
cargo test -Z sanitizer=memory	5m 23s
cargo test -Z sanitizer=thread	2m 41s
	1h 4m 57s

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