These calls are no longer needed after edc316020e8270dafc5e31465d532baebdafd3dd
from #19098 which started instantiating BasicTestingSetup.m_node.chain
Patch from MarcoFalke <falke.marco@gmail.com> in
https://github.com/bitcoin/bitcoin/pull/19425#discussion_r526701954
Co-authored-by: MarcoFalke <falke.marco@gmail.com>