cts: remove topBufferDelay_ from TreeBuilder as it is not used anymore

Signed-off-by: arthurjolo <[email protected]>

Author: arthurjolo

src/cts/src/TreeBuilder.h

@@ -220,8 +220,6 @@ class TreeBuilder
 
   float getAveSinkArrival() const { return aveArrival_; }
   void setAveSinkArrival(float arrival) { aveArrival_ = arrival; }
-  float getTopBufferDelay() const { return topBufferDelay_; }
-  void setTopBufferDelay(float delay) { topBufferDelay_ = delay; }
   odb::dbInst* getTopBuffer() const { return topBuffer_; }
   void setTopBuffer(odb::dbInst* inst) { topBuffer_ = inst; }
   std::string getTopBufferName() const { return topBufferName_; }
@@ -257,7 +255,6 @@ class TreeBuilder
       insertionDelays_;
   TreeType type_ = TreeType::RegularTree;
   float aveArrival_ = 0.0;
-  float topBufferDelay_ = 0.0;
   odb::dbInst* topBuffer_ = nullptr;
   std::string topBufferName_;
   odb::dbNet* drivingNet_ = nullptr;