Remove unused TileWidth variable 

diff --git a/Source/GmmLib/Texture/GmmTextureAlloc.cpp b/Source/GmmLib/Texture/GmmTextureAlloc.cpp
index 3311c0b..18d04f9 100644
--- a/Source/GmmLib/Texture/GmmTextureAlloc.cpp
+++ b/Source/GmmLib/Texture/GmmTextureAlloc.cpp
@@ -1237,7 +1237,6 @@
        pTexInfo->Flags.Info.TiledY)
     {
         uint32_t TileHeight = pGmmLibContext->GetPlatformInfo().TileInfo[pTexInfo->TileMode].LogicalTileHeight;
-        uint32_t TileWidth  = pGmmLibContext->GetPlatformInfo().TileInfo[pTexInfo->TileMode].LogicalTileWidth;
 
         Height = GFX_ALIGN(YHeight, TileHeight) + GFX_ALIGN(VHeight, TileHeight);
     }