Drop unused use in doctests (#3185) #5277

Job	Run time
check	2m 24s
cargo-hack	2m 51s
check-docs	19s
cargo-public-api-crates (axum)	1m 2s
cargo-public-api-crates (axum-core)	42s
cargo-deny check (advisories)	22s
dependencies-are-sorted	42s
Spell Check with Typos	5s
cargo-public-api-crates (axum-extra)	55s
cargo-deny check (bans licenses sources)	23s
cargo-public-api-crates (axum-macros)	45s
armv5te-unknown-linux-musleabi	29s
test-docs	1m 31s
test-nightly	1m 7s
test-msrv	2m 56s
test-versions (stable)	1m 15s
wasm32-unknown-unknown	18s
test-versions (beta)	4m 9s
	22m 15s

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