Remove more dead code from texturemgr.

textures.cpp

@@ -47,10 +47,6 @@ namespace textures {
       }
 
       TMGR.surfaces[surface_i] = load_image(texture_fname);
-
-      wchar_t tid = config["display"];
-      fmt::println("texture {} has surface_i={}", texture_fname, surface_i);
-      TMGR.char_to_texture[tid] = surface_i;
     }
   }
 

textures.hpp

@@ -17,7 +17,6 @@ namespace textures {
   struct TextureManager {
     std::vector<sf::Image> surfaces;
     std::unordered_map<std::string, SpriteTexture> sprite_textures;
-    std::unordered_map<wchar_t, int> char_to_texture;
     sf::Image floor;
     sf::Image ceiling;
   };