lints: Enable `warn(unused_qualifications)` #89

Job	Run time
cargo fmt	18s
cargo clippy (android) (armv7-linux-androideabi)	40s
cargo clippy (android) (aarch64-linux-android)	40s
cargo check (msrv) (android) (armv7-linux-androideabi)	34s
cargo clippy (android) (x86_64-linux-android)	30s
cargo check (msrv) (windows-latest)	49s
cargo check (msrv) (android) (aarch64-linux-android)	25s
cargo check (msrv) (macos-14)	34s
cargo check (msrv) (android) (x86_64-linux-android)	36s
cargo doc (windows-latest)	58s
cargo check (msrv) (ubuntu-latest)	17s
cargo clippy (windows-latest)	58s
cargo doc (macos-14)	27s
cargo test (windows-latest)	52s
cargo clippy (macos-14)	30s
cargo doc (ubuntu-latest)	29s
cargo test (macos-14)	21s
cargo clippy (ubuntu-latest)	31s
cargo test (ubuntu-latest)	18s
	10m 47s

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