After clang update, we got the below error: external/libcxx/libcxx_test_template.cpp clang++: error: unknown argument: '-fcoroutines-ts' Since this option has been removed in clang, remove test for it. Bug: 280683256 Test: build with clang-r498229 Change-Id: Icecd7152f8d724d680bf17e3f920f15365b285a6