[qs] remove assertion on timestamp #70459

Job	Run time
file_change_determinator	9s
rust-consensus-only-unit-test	0s
rust-unit-tests	0s
rust-doc-tests	4m 47s
rust-consensus-only-smoke-test	0s
rust-cargo-deny	1m 44s
rust-smoke-tests	27m 9s
rust-lints	3m 38s
rust-check-merge-base	1m 41s
general-lints	26s
rust-cryptohasher-domain-separation-check	0s
rust-targeted-unit-tests	6m 39s
rust-build-cached-packages	2m 15s
	48m 28s

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