fixed various minor warnings

src/integrators/misc/irrcache_proc.cpp

@@ -149,7 +149,6 @@ private:
 	ref<IrradianceCache> m_irrCache;
 	int m_resolution;
 	bool m_gradients, m_clampNeighbor, m_clampScreen;
-	Float m_influenceMin, m_influenceMax;
 	Float m_quality;
 };
 

src/integrators/misc/irrcache_proc.h

@@ -94,7 +94,6 @@ private:
 	ref<IrradianceRecordVector> m_samples;
 	int m_resolution;
 	bool m_gradients, m_clampNeighbor, m_clampScreen;
-	Float m_influenceMin, m_influenceMax;
 	Float m_quality;
 	ProgressReporter *m_progress;
 };

src/textures/vertexcolors.cpp

@@ -110,7 +110,6 @@ public:
 private:
 	Spectrum m_brightReflectance;
 	Spectrum m_darkReflectance;
-	Float m_width;
 };
 
 Shader *VertexColors::createShader(Renderer *renderer) const {