QA: Avoid re-reading config.ini unnecessarily
QA: Avoid re-reading config.ini unnecessarily

BitcoinTestFramework.main already loads and stores config.ini on the object itself; just access that instead of re-reading the file to check for features


Former-commit-id: ae67a1666ae7eba184084aa1fb81f6178f3aa5df
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin