Refactor header files to remove unused includes and improve code clarity

src/app/zelda3/overworld/overworld.cc

@@ -4,6 +4,7 @@
 #include <future>
 #include <unordered_map>
 #include <vector>
+#include <set>
 
 #include "absl/status/status.h"
 #include "app/core/features.h"

src/app/zelda3/overworld/overworld.h

@@ -4,7 +4,6 @@
 #include <array>
 #include <vector>
 
-#include "absl/container/flat_hash_map.h"
 #include "absl/status/status.h"
 #include "app/gfx/snes_tile.h"
 #include "app/rom.h"

src/app/zelda3/overworld/overworld_exit.h

@@ -5,7 +5,6 @@
 #include <iostream>
 
 #include "app/zelda3/common.h"
-#include "util/macro.h"
 
 namespace yaze {
 namespace zelda3 {