[tests] Remove unused variables
Backport of Core PR10047
Depends on D3023
Build Bitcoin-ABC / Diffs / Bitcoin-ABC Diff Testing started.
Build Bitcoin-ABC / Diffs / Bitcoin-ABC Diff Testing passed.
Where is part 1 ? Why doesn't this depends on part 1 ?
Also fix the test plan so command appear like command, prefixed with 2 spaces.
Sorry, I must've forgotten to put the dependency in. Added now. Will fix the test plan later tonight.