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

Former-commit-id: a642927494b48cccb919d6a969f484dc8ba09494
syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin