Fix build issue, removed unneeded stub function.

kraken/KRSamplerManager.cpp

@@ -49,8 +49,3 @@ KRSampler* KRSamplerManager::getSampler(KRSurface& surface, const SamplerInfo& i
   // TODO - Implement stub function
   return nullptr;
 }
-
-size_t KRSamplerManager::getSamplerHandlesUsed()
-{
-  // TODO - Implement stub function
-}

kraken/KRSamplerManager.h

@@ -52,8 +52,6 @@ public:
 
   KRSampler* getSampler(KRSurface& surface, const SamplerInfo& info);
 
-  size_t getSamplerHandlesUsed();
-
 private:
   typedef std::map<std::pair<std::string, std::vector<int> >, KRSampler*> SamplerMap;
   SamplerMap m_samplers;