Remove superfluous calls to BoxConstraint::debug_check (#610) #1610

Job	Run time
Prime LFS Cache	3s
cargo check (msrv) (wasm32)	21s
cargo check (msrv) (windows-latest)	1m 10s
cargo check (aarch64-android)	19s
cargo clippy (windows-latest)	3m 48s
cargo check (msrv) (macos-latest)	25s
cargo clippy (macos-latest)	1m 7s
cargo check (msrv) (ubuntu-latest)	35s
cargo clippy (wasm32)	1m 7s
cargo clippy (ubuntu-latest)	1m 35s
cargo doc	1m 22s
formatting	27s
cargo test (wasm32)	19s
typos	5s
cargo test (windows-latest)	4m 26s
cargo test (macos-latest)	1m 31s
cargo test (ubuntu-latest)	4m 30s
	23m 10s

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