Avoid unused const variable/verbose_print warning #1525

Job	Run time
build-on-opencl (OPENMP=ON, SMM=libxsmm)	8m 14s
build-on-cuda (OPENMP=ON)	8m 6s
build-and-test (MPI=ON, OPENMP=ON, SMM=blas, openmpi)	4m 15s
build-on-rocm (OPENMP=ON, G2G=ON)	3m 39s
pre-commit	1m 12s
build-and-test (MPI=ON, OPENMP=ON, SMM=blas, mpich)	4m 10s
build-on-rocm (OPENMP=ON, G2G=OFF)	3m 40s
build-and-test (MPI=ON, OPENMP=ON, SMM=libxsmm, openmpi)	4m 7s
build-and-test (MPI=ON, OPENMP=ON, SMM=libxsmm, mpich)	3m 53s
build-and-test (MPI=ON, OPENMP=OFF, SMM=blas, openmpi)	9m 10s
build-and-test (MPI=ON, OPENMP=OFF, SMM=blas, mpich)	9m 25s
build-and-test (MPI=ON, OPENMP=OFF, SMM=libxsmm, openmpi)	8m 56s
build-and-test (MPI=ON, OPENMP=OFF, SMM=libxsmm, mpich)	9m 28s
build-and-test (MPI=OFF, OPENMP=ON, SMM=blas, openmpi)	5m 27s
build-and-test (MPI=OFF, OPENMP=ON, SMM=libxsmm, openmpi)	5m 25s
build-and-test (MPI=OFF, OPENMP=OFF, SMM=blas, openmpi)	3m 33s
build-and-test (MPI=OFF, OPENMP=OFF, SMM=libxsmm, openmpi)	3m 15s
Combine & check coverage.	45s
	1h 36m 40s

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