refactor(vcpkg): remove SDL2 dependency from vcpkg configuration

- Eliminated the SDL2 dependency from the vcpkg.json file, streamlining the project's dependency management.
- Removed the associated overrides for SDL2, simplifying the configuration.

Benefits:
- Reduces complexity in the dependency setup, leading to a more maintainable project structure.

vcpkg.json

@@ -5,12 +5,6 @@
   "description": "Yet Another Zelda3 Editor",
   "builtin-baseline": "01f602195983451bc83e72f4214af2cbc495aa94",
   "dependencies": [
-    {
-      "name": "sdl2",
-      "platform": "windows",
-      "default-features": false,
-      "features": []
-    },
     {
       "name": "yaml-cpp",
       "platform": "windows"
@@ -19,11 +13,5 @@
       "name": "zlib",
       "platform": "windows"
     }
-  ],
-  "overrides": [
-    {
-      "name": "sdl2",
-      "version": "2.30.9"
-    }
   ]
 }