build: Remove unused src/obj-test folder
build: Remove unused src/obj-test folder

Former-commit-id: 51f514e564b92b027ecf74d988e0d50467c213f3
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin