rm generics when useless #2997

Job	Run time
Check no_std	29s
List directories for parallelizing tests	3s
Check Documentation	1m 4s
Check (stable)	15s
Check (nightly)	1m 9s
Check Style	15s
Test (stable)	9m 3s
Test assembly	8m 18s
Test (nightly)	17m 36s
Test (cp6_782/)	6s
Test (mnt4_753/)	14m 30s
Test (mnt6_753/)	9s
Test (./ed_on_mnt4_753)	3m 55s
Test (./secp256r1)	58s
Test (./ed_on_mnt4_298)	1m 9s
Test (./ed_on_cp6_782)	1m 17s
Test (./mnt4_298)	3m 48s
Test (./mnt6_298)	5m 26s
Test (./ed_on_bn254)	1m 5s
Test (./bn254)	2m 28s
Test (./secp256k1)	1m 2s
Test (./bw6_761)	4m 4s
Test (./bls12_377)	4m 13s
Test (./grumpkin)	1m 13s
Test (./secp384r1)	1m 24s
Test (./ed_on_bls12_377)	1m 8s
Test (./secq256k1)	1m 2s
Test (./ed25519)	1m 8s
Test (./ed_on_bls12_381)	1m 44s
Test (./ed_on_bw6_761)	44s
Test (./curve25519)	1m 12s
Test (./ed_on_bls12_381_bandersnatch)	1m 5s
Test (./pallas)	1m 23s
Test (./vesta)	1m 5s
Test (./bw6_767)	4m 11s
Test (./bls12_381)	3m 10s
	1h 42m 51s

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