Remove convert_negative_shift function #19

Job	Run time
spell check with typos	5s
build (cuda, nvcc, g++, 20, -DKokkos_ENABLE_CUDA=ON -DKokkos_ARCH_AMPERE80=ON -DKokkos_ENABLE_OPE...	21m 1s
build (serial, gcc, g++, 17, -DKokkos_ENABLE_SERIAL=ON, -DCMAKE_CXX_FLAGS="-Wall -Wextra" -DCMAKE...	10m 53s
build (threads, gcc, g++, 20, -DKokkos_ENABLE_THREADS=ON, -DCMAKE_CXX_FLAGS="-Wall -Wextra" -DCMA...	10m 55s
build (clang-tidy, clang, clang++, 17, -DKokkos_ENABLE_SERIAL=ON, -DCMAKE_CXX_FLAGS="-Wall -Wextr...	9m 24s
build (openmp, gcc, g++, 17, -DKokkos_ENABLE_OPENMP=ON -DKokkos_ENABLE_SERIAL=ON, -DCMAKE_CXX_FLA...	8m 38s
build (cuda, nvcc, g++, 20, -DKokkos_ENABLE_CUDA=ON -DKokkos_ARCH_AMPERE80=ON -DKokkos_ENABLE_OPE...	19m 37s
build (rocm, rocm, hipcc, 20, -DKokkos_ENABLE_HIP=ON -DKokkos_ARCH_AMD_GFX90A=ON, -DCMAKE_CXX_FLA...	22m 19s
build (hip, rocm, hipcc, 17, -DKokkos_ENABLE_HIP=ON -DKokkos_ARCH_AMD_GFX90A=ON -DKokkos_ENABLE_T...	15m 59s
build (hip, rocm, hipcc, 17, -DKokkos_ENABLE_HIP=ON -DKokkos_ARCH_AMD_GFX90A=ON -DKokkos_ENABLE_T...	21m 34s
build (rocm, rocm, hipcc, 20, -DKokkos_ENABLE_HIP=ON -DKokkos_ARCH_AMD_GFX90A=ON, -DCMAKE_CXX_FLA...	22m 32s
test (openmp, gcc, ubuntu-latest, false)	8m 2s
test (threads, gcc, ubuntu-latest, false)	4m 13s
test (serial, gcc, ubuntu-latest, false)	4m 14s
	2h 59m 26s

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