test: Remove confusing and broken use of wait_until global
test: Remove confusing and broken use of wait_until global

Former-commit-id: f458f1efeb9cf241b3fc9433731143a2e43d27f1
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin