Remove legacy integer methods #2122

Job	Run time	Billable time
msrv	52s	0s
minimal	11s	0s
docs	24s	0s
check-cfg	22s	0s
quickchecking	13s	0s
rustfmt-clippy	31s	0s
test-book	5s	0s
test-expectations (ubuntu-latest)	47s	0s
test-expectations (macos-12)	3m 16s	0s
test (ubuntu-latest, 9.0, 1, 0, 0, 0, 0)	1m 45s	0s
test (ubuntu-latest, 9.0, 1, 0, 0, 1, 0)	2m 11s	0s
test (ubuntu-latest, 9.0, 1, 0, 1, 0, 0)	1m 43s	0s
test (ubuntu-latest, 9.0, 1, 0, 1, 1, 0)	1m 46s	0s
test (ubuntu-latest, 9.0, 1, 1, 0, 0, 0)	2m 9s	0s
test (ubuntu-latest, 9.0, 1, 1, 0, 1, 0)	2m 16s	0s
test (ubuntu-latest, 9.0, 1, 1, 1, 0, 0)	2m 14s	0s
test (ubuntu-latest, 9.0, 1, 1, 1, 1, 0)	2m 16s	0s
test (ubuntu-latest, 16.0, 1, 0, 0, 0, 0)	3m 4s	0s
test (ubuntu-latest, 16.0, 1, 0, 0, 1, 0)	2m 33s	0s
test (ubuntu-latest, 16.0, 1, 0, 1, 0, 0)	2m 37s	0s
test (ubuntu-latest, 16.0, 1, 0, 1, 1, 0)	2m 33s	0s
test (ubuntu-latest, 16.0, 1, 1, 0, 0, 0)	2m 56s	0s
test (ubuntu-latest, 16.0, 1, 1, 0, 1, 0)	3m 1s	0s
test (ubuntu-latest, 16.0, 1, 1, 1, 0, 0)	3m 7s	0s
test (ubuntu-latest, 16.0, 1, 1, 1, 1, 0)	3m 37s	0s
test (ubuntu-latest, 16.0, 0, 0, 1)	1m 43s	0s
test (macos-12, 9.0, 0, 0, 0)	1m 26s	0s
success	1s	0s
	49m 39s	0s

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