chore: remove children hashes methods (#35) #121

Job	Run time
clippy	21s
docs	20s
feature-checks	16s
fmt	11s
miri --no-default-features	4m 37s
miri	4m 20s
miri --all-features	4m 34s
test stable --no-default-features	12s
test stable	11s
test stable --all-features	42s
test beta --no-default-features	18s
test beta	16s
test beta --all-features	45s
test nightly --no-default-features	21s
test nightly	15s
test nightly --all-features	44s
test 1.79 --no-default-features	12s
test 1.79	16s
test 1.79 --all-features	24s
	19m 15s

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