Remove deprecated CLI option `--format` #25188

Job	Run time
cargo fmt	15s
Determine changes	10s
mkdocs	2m 16s
pre-commit	44s
python package	1m 13s
cargo clippy	1m 57s
cargo fuzz	5m 10s
benchmarks	4m 25s
cargo test (linux)	3m 49s
cargo test (wasm)	1m 17s
cargo test (windows)	6m 26s
cargo udeps	1m 56s
formatter instabilities and black similarity	0s
test scripts	49s
test ruff-lsp	15s
ecosystem	8m 16s
	38m 58s

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