Deprecated `divn` and implemented `core::ops::Shr` #2556

Job	Run time
List directories for parallelizing tests	8s
Check Documentation	1m 45s
Check no_std	58s
Check (stable)	20s
Check (nightly)	1m 24s
Check Style	9s
Test against curves (bls12_377)	57s
Test (stable)	6m 18s
Test against curves (bls12_381)	38s
Test against curves (bn254)	55s
Test (nightly)	10m 56s
Test (cp6_782/)	5s
Test against curves (pallas)	45s
Test against curves (bw6_761)	56s
Test assembly	5m 16s
Test (mnt4_753/)	13s
Test against curves (mnt4_298)	56s
Test (mnt6_753/)	15s
Test against curves (mnt6_298)	58s
Test against curves (ed_on_bls12_377)	56s
Test (./bw6_761)	3m 16s
Test (./ed_on_mnt4_298)	1m 17s
Test (./ed_on_mnt4_753)	2m 56s
Test (./pallas)	1m 7s
Test (./bn254)	1m 53s
Test (./ed_on_cp6_782)	1m 3s
Test (./ed25519)	1m 1s
Test (./secq256k1)	1m 0s
Test (./ed_on_bls12_381)	1m 21s
Test (./secp256k1)	1m 0s
Test (./grumpkin)	1m 6s
Test (./bls12_377)	3m 55s
Test (./ed_on_bw6_761)	1m 24s
Test (./curve25519)	1m 15s
Test (./mnt4_298)	2m 4s
Test (./bls12_381)	3m 1s
Test (./secp384r1)	1m 10s
Test (./mnt6_298)	2m 51s
Test (./bw6_767)	3m 10s
Test (./secp256r1)	1m 26s
Test (./ed_on_bls12_377)	1m 28s
Test (./ed_on_bls12_381_bandersnatch)	1m 12s
Test (./ed_on_bn254)	1m 1s
Test (./vesta)	1m 46s
	1h 17m 31s

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