removing kain as a test #1487

Job	Run time
macos-latest: clang++ Release Threads	13m 26s
macos-latest: clang++ Release OneTBB	3m 56s
macos-latest: clang++ Release PaRSEC	3m 38s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	24m 41s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	3m 19s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	4m 27s
macos-latest: clang++ Debug Threads	27m 10s
macos-latest: clang++ Debug OneTBB	3m 56s
macos-latest: clang++ Debug PaRSEC	4m 55s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	27m 24s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	3m 7s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	3m 55s
	2h 3m 54s

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