[tests] Remove unused variables
Summary:
[tests] Remove unused variables
Backport of Core PR10047
https://github.com/bitcoin/bitcoin/pull/10047/
Commit 2/2
Depends on D3023
Test Plan:
test_runner.py
Reviewers: jasonbcox, deadalnix, Fabien, markblundeberg, O1 Bitcoin ABC, #bitcoin_abc
Reviewed By: deadalnix, Fabien, O1 Bitcoin ABC, #bitcoin_abc
Differential Revision: https://reviews.bitcoinabc.org/D3024