remove ComparisonTestFramework dependency from segwit recovery test
Summary: This borrows the approach from D3601.
Test Plan: ./test/functional/test_runner.py abc-segwit-recovery.py
Reviewers: deadalnix, Fabien, Mengerian, #bitcoin_abc
Reviewed By: deadalnix, #bitcoin_abc
Differential Revision: https://reviews.bitcoinabc.org/D3674