Buildfix, remove redundant variable

Common/UI/ViewGroup.h

@@ -111,7 +111,7 @@ public:
 	void Layout() override;
 };
 
-const float NONE = -FLT_MAX;
+constexpr float NONE = -FLT_MAX;
 
 enum class Centering {
 	None = 0,

GPU/Common/DrawEngineCommon.h

@@ -19,6 +19,7 @@
 
 #include <vector>
 #include <algorithm>
+#include <cfloat>
 
 #include "Common/CommonTypes.h"
 #include "Common/Data/Collections/Hashmaps.h"

GPU/Common/GPUStateUtils.cpp

@@ -559,8 +559,6 @@ DepthScaleFactors GetDepthScaleFactors(u32 useFlags) {
 }
 
 void ConvertViewportAndScissor(const DisplayLayoutConfig &config, bool useBufferedRendering, float renderWidth, float renderHeight, int bufferWidth, int bufferHeight, ViewportAndScissor &out) {
-	out.throughMode = gstate.isModeThrough();
-
 	float renderWidthFactor, renderHeightFactor;
 	float renderX = 0.0f, renderY = 0.0f;
 	float displayOffsetX, displayOffsetY;

GPU/Common/GPUStateUtils.h

@@ -76,7 +76,6 @@ struct ViewportAndScissor {
 	float viewportY;
 	float viewportW;
 	float viewportH;
-	bool throughMode;
 };
 
 // config is only used for non-buffered rendering.