Simplifying DifficultySerializer.decodeMPI #2642

Job	Run time
Run node tests (ubuntu-latest, 2.12.18, [email protected])	11m 26s
Run node tests (ubuntu-latest, 2.12.18, [email protected])	11m 26s
Run wallet tests and publish a wallet snapshot (ubuntu-latest, 2.13.12, [email protected])	1m 14s
Run wallet tests and publish a wallet snapshot (ubuntu-latest, 2.13.12, [email protected])	1m 14s
Run it node tests (ubuntu-latest, 2.12.18, [email protected])	21m 7s
Run it node tests (ubuntu-latest, 2.12.18, [email protected])	21m 7s
Run ergo-core tests and publish a ergo-core snapshot (ubuntu-latest, 2.13.12, [email protected])	1m 9s
Run ergo-core tests and publish a ergo-core snapshot (ubuntu-latest, 2.13.12, [email protected])	1m 32s
Run wallet tests and publish a wallet snapshot (ubuntu-latest, 2.12.18, [email protected])	1m 18s
Run wallet tests and publish a wallet snapshot (ubuntu-latest, 2.12.18, [email protected])	1m 18s
Run ergo-core tests and publish a ergo-core snapshot (ubuntu-latest, 2.12.18, [email protected])	1m 20s
Run ergo-core tests and publish a ergo-core snapshot (ubuntu-latest, 2.12.18, [email protected])	1m 20s
Run wallet tests and publish a wallet snapshot (ubuntu-latest, 2.11.12, [email protected])	1m 16s
Run wallet tests and publish a wallet snapshot (ubuntu-latest, 2.11.12, [email protected])	1m 16s
Run ergo-core tests and publish a ergo-core snapshot (ubuntu-latest, 2.11.12, [email protected])	1m 30s
Run ergo-core tests and publish a ergo-core snapshot (ubuntu-latest, 2.11.12, [email protected])	1m 30s
	1h 21m 3s

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