Remove unopened testSuiteFinished

This was removed in e6adedc0c421f05624e5b36ec5c8985687a6a50b but was added again in bbbba3136bc9185bfb246a9b5d553a1e4f83b7ae (whether on purpose or not...).

I don't know if finishing a testSuite without starting one is acceptable or not, but there is no point closing something that was never openeded.