decremented EXPECTED_VIOLATION_COUNT
decremented EXPECTED_VIOLATION_COUNT

Summary: Apparently this is a thing so whatever

Test Plan: `ninja check-functional`

Reviewers: deadalnix, O1 Bitcoin ABC, #bitcoin_abc

Reviewed By: deadalnix, O1 Bitcoin ABC, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D6188

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