C4Draw: Remove C4Draw::IsShaderific()

In a surprising touch, using shaders to affect pretty much every pixel
that gets drawn on screen means there is little reason for code to ask
the renderer if it knows about shaders.

src/graphics/C4Draw.h

@@ -170,7 +170,6 @@ public:
 	virtual CStdGLCtx *CreateContext(HWND, C4AbstractApp *) { return NULL; }
 #endif
 	virtual bool OnResolutionChanged(unsigned int iXRes, unsigned int iYRes) = 0; // reinit clipper for new resolution
-	virtual bool IsShaderific() { return false; }
 	// Clipper
 	bool GetPrimaryClipper(int &rX1, int &rY1, int &rX2, int &rY2);
 	bool SetPrimaryClipper(int iX1, int iY1, int iX2, int iY2);

src/graphics/C4DrawGL.h

@@ -162,7 +162,6 @@ public:
 	// General
 	void Clear();
 	void Default();
-	virtual bool IsShaderific() { return true; }
 	virtual bool OnResolutionChanged(unsigned int iXRes, unsigned int iYRes); // reinit clipper for new resolution
 	// Clipper
 	bool UpdateClipper(); // set current clipper to render target

src/landscape/C4LandscapeRenderClassic.cpp

@@ -38,7 +38,7 @@ bool C4LandscapeRenderClassic::ReInit(int32_t iWidth, int32_t iHeight)
 	delete Surface32; Surface32 = NULL;
 	Surface32 = new C4Surface();
 	// without shaders, the FoW is only as detailed as the landscape has tiles.
-	if(!Surface32->Create(iWidth, iHeight,false,pDraw->IsShaderific() ? 0 : 64, 0))
+	if (!Surface32->Create(iWidth, iHeight, false, 0, 0))
 		return false;
 	// Safe back info
 	this->iWidth = iWidth;