Sprite/video: remove dead code

GetPalette is pure virtual and the video driver code died when we implemented the SDLSurfaceSprite subclass

gemrb/core/Sprite2D.cpp

@@ -64,13 +64,6 @@ bool Sprite2D::IsPixelTransparent(unsigned short x, unsigned short y) const
 	return GetPixel(x, y).a == 0;
 }
 
-/** Get the Palette of a Sprite */
-Palette* Sprite2D::GetPalette() const
-{
-	if (!vptr) return NULL;
-	return core->GetVideoDriver()->GetPalette(vptr);
-}
-
 Color Sprite2D::GetPixel(unsigned short x, unsigned short y) const
 {
 	Color c = { 0, 0, 0, 0 };

gemrb/core/Video.h

@@ -181,8 +181,6 @@ class GEM_EXPORT Video : public Plugin {
 	void BlitTiled(Region rgn, const Sprite2D* img, bool anchor = false);
 	/** Sets Event Manager */
 	void SetEventMgr(EventMgr* evnt);
-	/** Gets the Palette of a surface */
-	virtual Palette* GetPalette(void* surface) = 0;
 	/** Flips sprite vertically, returns new sprite */
 	virtual Sprite2D *MirrorSpriteVertical(const Sprite2D *sprite, bool MirrorAnchor) = 0;
 	/** Flips sprite horizontally, returns new sprite */

gemrb/plugins/SDLVideo/SDLVideo.cpp

@@ -1566,21 +1566,6 @@ void SDLVideoDriver::DrawPolyline(Gem_Polygon* poly, const Color& color, bool fi
 	return;
 }
 
-Palette* SDLVideoDriver::GetPalette(void *vptr)
-{
-	SDL_Surface* s = ( SDL_Surface* ) vptr;
-	if (s->format->BitsPerPixel != 8) {
-		return NULL;
-	}
-	Palette* pal = new Palette();
-	for (int i = 0; i < s->format->palette->ncolors; i++) {
-		pal->col[i].r = s->format->palette->colors[i].r;
-		pal->col[i].g = s->format->palette->colors[i].g;
-		pal->col[i].b = s->format->palette->colors[i].b;
-	}
-	return pal;
-}
-
 // Flips given sprite vertically (up-down). If MirrorAnchor=true,
 // flips its anchor (i.e. origin//base point) as well
 // returns new sprite

gemrb/plugins/SDLVideo/SDLVideo.h

@@ -128,8 +128,6 @@ class SDLVideoDriver : public Video {
 	void DrawLine(short x1, short y1, short x2, short y2, const Color& color, bool clipped = false);
 	/** Blits a Sprite filling the Region */
 	void BlitTiled(Region rgn, const Sprite2D* img, bool anchor = false);
-	/** Get the Palette of a surface */
-	Palette* GetPalette(void *vptr);
 	/** Flips sprite vertically */
 	Sprite2D *MirrorSpriteVertical(const Sprite2D *sprite, bool MirrorAnchor);
 	/** Flips sprite horizontally */