remove extra/intermediate size step for min_jj introduced in PR747

driver/level3/level3_thread.c

@@ -373,8 +373,10 @@ static int inner_thread(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;
           else
+*/
             if (min_jj > GEMM_UNROLL_N) min_jj = GEMM_UNROLL_N;
 #endif
         /* Copy part of local region of B into workspace */