ocl: removed unused code #1397

Job	Run time
build-on-opencl (OPENMP=ON, SMM=libxsmm)	11m 36s
build-on-cuda (OPENMP=ON)	14m 18s
build-on-rocm (OPENMP=ON)	12m 12s
pre-commit	1m 34s
build-and-test (MPI=ON, OPENMP=ON, SMM=blas, openmpi)	8m 8s
build-and-test (MPI=ON, OPENMP=ON, SMM=blas, mpich)	6m 55s
build-and-test (MPI=ON, OPENMP=ON, SMM=libxsmm, openmpi)	7m 30s
build-and-test (MPI=ON, OPENMP=ON, SMM=libxsmm, mpich)	6m 25s
build-and-test (MPI=ON, OPENMP=OFF, SMM=blas, openmpi)	4m 36s
build-and-test (MPI=ON, OPENMP=OFF, SMM=blas, mpich)	4m 2s
build-and-test (MPI=ON, OPENMP=OFF, SMM=libxsmm, openmpi)	4m 23s
build-and-test (MPI=ON, OPENMP=OFF, SMM=libxsmm, mpich)	4m 6s
build-and-test (MPI=OFF, OPENMP=ON, SMM=blas, openmpi)	7m 51s
build-and-test (MPI=OFF, OPENMP=ON, SMM=libxsmm, openmpi)	8m 45s
build-and-test (MPI=OFF, OPENMP=OFF, SMM=blas, openmpi)	4m 6s
build-and-test (MPI=OFF, OPENMP=OFF, SMM=libxsmm, openmpi)	3m 48s
Combine & check coverage.	55s
	1h 51m 10s

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