remove extra/intermediate size step of min_jj from PR747

driver/level3/level3.c

@@ -339,8 +339,10 @@ int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
 #else
         if (min_jj >= 3*GEMM_UNROLL_N) min_jj = 3*GEMM_UNROLL_N;
         else
-        	if (min_jj >= 2*GEMM_UNROLL_N) min_jj = 2*GEMM_UNROLL_N;
+/*
+		if (min_jj >= 2*GEMM_UNROLL_N) min_jj = 2*GEMM_UNROLL_N;
         	else
+*/
           		if (min_jj > GEMM_UNROLL_N) min_jj = GEMM_UNROLL_N;
 #endif