fix compile error on mac

Author: 1a1a11a

libCacheSim/traceAnalyzer/reuse.h

@@ -17,11 +17,9 @@ class ReuseDistribution {
  public:
   explicit ReuseDistribution(std::string output_path,
                              int time_window_param = 300,
-                             int rtime_granularity_param = 5,
-                             int vtime_granularity_param = 1000)
+                             int rtime_granularity_param = 5)
       : time_window_(time_window_param),
-        rtime_granularity_(rtime_granularity_param),
-        vtime_granularity_(vtime_granularity_param) {
+        rtime_granularity_(rtime_granularity_param) {
     turn_on_stream_dump(output_path);
   };
 
@@ -48,7 +46,6 @@ class ReuseDistribution {
   const double log_log_base_ = log(log_base_);
   const int time_window_;
   const int rtime_granularity_;
-  const int vtime_granularity_;
   int64_t next_window_ts_ = -1;
 
   std::vector<uint32_t> window_reuse_rtime_req_cnt_;