- use the new ZDoom code for retrieving a sky's cap color to avoid redundancies.

src/textures/textures.h

@@ -307,8 +307,6 @@ public:
 		FGLTexture *SystemTexture[2];
 		FTexture *Brightmap;
 		PalEntry GlowColor;
-		PalEntry FloorSkyColor;
-		PalEntry CeilingSkyColor;
 		int GlowHeight;
 		FloatRect *areas;
 		int areacount;
@@ -318,7 +316,6 @@ public:
 		bool bGlowing:1;						// Texture glows
 		bool bFullbright:1;						// always draw fullbright
 		bool bSkybox:1;							// This is a skybox
-		bool bSkyColorDone:1;					// Fill color for sky
 		char bBrightmapChecked:1;				// Set to 1 if brightmap has been checked
 		bool bDisableFullbright:1;				// This texture will not be displayed as fullbright sprite
 		bool bNoFilter:1;
@@ -331,7 +328,6 @@ public:
 	MiscGLInfo gl_info;
 
 	void GetGlowColor(float *data);
-	PalEntry GetSkyCapColor(bool bottom);
 	bool isGlowing() { return gl_info.bGlowing; }
 	bool isFullbright() { return gl_info.bFullbright; }
 	void CreateDefaultBrightmap();