Remove loop unrolling #181

Job	Run time
Build on ubuntu-20.04 g++-7	51s
Build on ubuntu20.04 aarch64 g++-8	7m 9s
Build on ubuntu-20.04 g++-8	48s
Build on ubuntu20.04 aarch64 g++-9	7m 16s
Build on ubuntu-latest g++-9	1m 0s
Build on ubuntu20.04 aarch64 g++-10	7m 5s
build-macos	1m 4s
Build on ubuntu-latest g++-10	1m 1s
Build on ubuntu22.04 aarch64 g++-12	7m 21s
Build on ubuntu-20.04 clang-7	56s
Build on ubuntu20.04 aarch64 clang-9	11m 12s
Build static on ubuntu-latest	1m 0s
Build on ubuntu-20.04 clang-8	1m 0s
Build on ubuntu20.04 aarch64 clang-10	11m 33s
Build on ubuntu-20.04 clang-9	52s
Build on ubuntu22.04 aarch64 clang-14	10m 46s
build-windows	2m 26s
Build on ubuntu-20.04 clang-10	52s
Build on ubuntu22.04 armv7 g++	7m 28s
Build on ubuntu-20.04 clang-11	56s
Build on ubuntu22.04 ppc64le g++-12	7m 40s
Build on ubuntu-latest clang-12	1m 3s
Build on ubuntu22.04 s390x g++-12	6m 28s
Build on ubuntu-latest clang-13	56s
Build on ubuntu22.04 riscv64 g++-12	6m 25s
Build on ubuntu-latest clang-14	59s
	1h 46m 7s

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