Small Matrix: disable low performance default kernel

kernel/generic/gemm_small_matrix_permit.c

@@ -29,9 +29,12 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 int CNAME(int transa, int transb, BLASLONG M, BLASLONG N, BLASLONG K, FLOAT alpha, FLOAT beta)
 {
+	return 0;
+/*
 	double MNK = (double) M * (double) N * (double) K;
 	if (MNK <= 100.0*100.0*100.0)
 		return 1;
 	else
 		return 0;
+*/
 }

kernel/generic/zgemm_small_matrix_permit.c

@@ -29,9 +29,12 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 int CNAME(int transa, int transb, BLASLONG M, BLASLONG N, BLASLONG K, FLOAT alpha0, FLOAT alpha1, FLOAT beta0, FLOAT beta1)
 {
+	return 0;
+/*
 	double MNK = (double) M * (double) N * (double) K;
 	if (MNK <= 100.0*100.0*100.0)
 		return 1;
 	else
 		return 0;
+*/
 }