Refactor Bitmap class: remove deprecated constructor and update Initialize method signature

src/app/gfx/bitmap.cc

@@ -6,9 +6,11 @@
 #endif
 
 #include <cstdint>
+#include <future>
 #include <memory>
 
 #include "absl/status/status.h"
+#include "app/core/platform/renderer.h"
 #include "app/gfx/snes_palette.h"
 #include "util/macro.h"
 
@@ -209,10 +211,6 @@ void Bitmap::SaveSurfaceToFile(std::string_view filename) {
   SDL_SaveBMP(surface_.get(), filename.data());
 }
 
-Bitmap::Bitmap(int width, int height, int depth, int data_size) {
-  Create(width, height, depth, std::vector<uint8_t>(data_size, 0));
-}
-
 void Bitmap::Initialize(int width, int height, int depth,
                         std::span<uint8_t> &data) {
   width_ = width;