network: remove handling of validation protocol versions 1 and 2 #20557

Job	Run time
check-dependency-rules	9s
check-fail-ci	10s
check-markdown	15s
check-readme	3m 16s
check-workspace	18s
preflight / preflight	45s
preflight / ci-versions	57s
check-toml-format	1m 3s
test-rust-features	1m 59s
check-rust-feature-propagation	2m 1s
check-umbrella	2m 5s
fmt	1m 23s
All quick checks passed	1s
	14m 22s

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