refactor: remove SDL_main

src/TowerDefense.cpp

@@ -9,6 +9,10 @@
 #include "window/Display.h"
 #include "misc/Random.h"
 
+#ifdef __ANDROID__
+extern "C" 
+#endif
+
 int main(int argc, const char* args[]) {
     td::utils::initRandomizer();
     Display::create();
@@ -19,12 +23,4 @@ int main(int argc, const char* args[]) {
     }
     Display::destroy();
     return 0;
-}
-
-#ifdef __ANDROID__
-extern "C" {
-    int SDL_main(int argc, const char* args[]) {
-        return main(argc, args);
-    }
-}
-#endif
+}