remove hashtraverser

app/task/precache/precachetask.cpp

@@ -85,14 +85,13 @@ bool PreCacheTask::Run()
   return true;
 }
 
-bool PreCacheTask::FrameDownloaded(FramePtr frame, const QByteArray &hash, const QVector<rational> &times)
+bool PreCacheTask::FrameDownloaded(FramePtr frame, const rational &time)
 {
   // Do nothing. Pre-cache essentially just creates more frames in the cache, it doesn't need to do
   // anything else.
 
   Q_UNUSED(frame)
-  Q_UNUSED(hash)
-  Q_UNUSED(times)
+  Q_UNUSED(time)
 
   return true;
 }

app/task/precache/precachetask.h

@@ -38,7 +38,7 @@ public:
 protected:
   virtual bool Run() override;
 
-  virtual bool FrameDownloaded(FramePtr frame, const QByteArray& hash, const QVector<rational>& times) override;
+  virtual bool FrameDownloaded(FramePtr frame, const rational &times) override;
 
   virtual bool AudioDownloaded(const TimeRange& range, const SampleBuffer &samples) override;