Remove static keyword in header files.

mace/kernels/addn.h

@@ -19,7 +19,7 @@
 namespace mace {
 namespace kernels {
 
-static constexpr int kCostPerGroup = 1024;
+constexpr int kCostPerGroup = 1024;
 
 template <DeviceType D, typename T>
 struct AddNFunctor {

mace/kernels/proposal.h

@@ -15,7 +15,7 @@
 namespace mace {
 namespace kernels {
 
-static inline std::vector<float> WHCenters(const std::vector<float> &anchor) {
+inline std::vector<float> WHCenters(const std::vector<float> &anchor) {
   // width, height, width_center, height_center
   std::vector<float> window(4);
   window[0] = anchor[2] - anchor[0] + 1;
@@ -25,7 +25,7 @@ static inline std::vector<float> WHCenters(const std::vector<float> &anchor) {
   return window;
 }
 
-static inline std::vector<std::vector<float>> GenerateAnchors(
+inline std::vector<std::vector<float>> GenerateAnchors(
     const std::vector<int> &scales,
     const std::vector<float> &ratios,
     const int base_size) {
@@ -65,7 +65,7 @@ static inline std::vector<std::vector<float>> GenerateAnchors(
   return anchors;
 }
 
-static inline std::vector<int> nms(const float *bboxes_ptr,
+inline std::vector<int> nms(const float *bboxes_ptr,
                             const index_t num_bboxes,
                             const float thresh,
                             const int post_nms_top_n) {

mace/kernels/resize_bilinear.h

@@ -23,7 +23,7 @@ struct CachedInterpolation {
   float lerp;
 };
 
-static inline float CalculateResizeScale(index_t in_size,
+inline float CalculateResizeScale(index_t in_size,
                                   index_t out_size,
                                   bool align_corners) {
   return (align_corners && out_size > 1)
@@ -31,7 +31,7 @@ static inline float CalculateResizeScale(index_t in_size,
              : in_size / static_cast<float>(out_size);
 }
 
-static inline void ComputeInterpolationWeights(
+inline void ComputeInterpolationWeights(
     const index_t out_size,
     const index_t in_size,
     const float scale,
@@ -46,7 +46,7 @@ static inline void ComputeInterpolationWeights(
   }
 }
 
-static inline float ComputeLerp(const float top_left,
+inline float ComputeLerp(const float top_left,
                          const float top_right,
                          const float bottom_left,
                          const float bottom_right,