modify code style

src/operators/kernel/conv_add_kernel.h

@@ -39,7 +39,6 @@ class ConvAddKernel : public OpKernelBase<DeviceType, FushionConvAddParam> {
   void Compute(const FushionConvAddParam &param) const;
 };
 
-
 inline void expand_bias(Tensor &bias, int axis, const DDim &dDim) {
   auto bias_ptr = bias.data<float>();
   const DDim bias_ddim = bias.dims();
@@ -76,7 +75,6 @@ inline void expand_bias(Tensor &bias, int axis, const DDim &dDim) {
     for (; remain > 0; remain--) {
       *new_ptr = v_bias;
       new_ptr++;
-
     }
   }
 #else