Bug#1008531: 0ad: assertion failure if hyperthreading (SMT) is supported but disabled

[Fabio Pedretti]

tags 1008531 fixed-upstream

This code was removed upstream and replaced with SDL calls:
https://gitea.wildfiregames.com/0ad/0ad/commit/354232eddf32ee9e3c4282c445a92c6db6358477#diff-ada9c7a7fc5596b22c434a7eda2ff60a5e8885e5
https://gitea.wildfiregames.com/0ad/0ad/commit/61534d63a1a5988b837425b2ac48b1e956c07e7d#diff-ada9c7a7fc5596b22c434a7eda2ff60a5e8885e5

Most likely it will also fix this issue.