Remove byte order logic from half-transparency lookups

Source/engine.cpp

@@ -52,11 +52,7 @@ void DrawHalfTransparentAligned32BlendedRectTo(const Surface &out, unsigned sx,
 	while (height-- > 0) {
 		for (unsigned i = 0; i < width; ++i, ++pix) {
 			const uint32_t v = *pix;
-#if SDL_BYTEORDER == SDL_LIL_ENDIAN
 			*pix = lookupTable[v & 0xFFFF] | (lookupTable[(v >> 16) & 0xFFFF] << 16);
-#else
-			*pix = lookupTable[(v >> 16) & 0xFFFF] | (lookupTable[v & 0xFFFF] << 16);
-#endif
 		}
 		pix += skipX;
 	}

Source/engine/palette.cpp

@@ -107,11 +107,7 @@ void GenerateBlendedLookupTable(std::array<SDL_Color, 256> &palette, int skipFro
 #if DEVILUTIONX_PALETTE_TRANSPARENCY_BLACK_16_LUT
 	for (unsigned i = 0; i < 256; ++i) {
 		for (unsigned j = 0; j < 256; ++j) {
-#if SDL_BYTEORDER == SDL_LIL_ENDIAN
 			const std::uint16_t index = i | (j << 8);
-#else
-			const std::uint16_t index = j | (i << 8);
-#endif
 			paletteTransparencyLookupBlack16[index] = paletteTransparencyLookup[0][i] | (paletteTransparencyLookup[0][j] << 8);
 		}
 	}