test: Remove unused -blockversion from tests
Summary:
This is a backport of core#20167 [1/3]
https://github.com/bitcoin/bitcoin/pull/20167/commits/fa2b778d0cf723925af8710d52cae211d4f036df
Test Plan: ninja check-functional
Reviewers: #bitcoin_abc, Fabien
Reviewed By: #bitcoin_abc, Fabien
Differential Revision: https://reviews.bitcoinabc.org/D10677