Android: replace porting::getTotalSystemMemory on SDL_GetSystemRAM

src/defaultsettings.cpp

@@ -548,7 +548,7 @@ void set_default_settings()
 
 	// Set the optimal settings depending on the memory size [Android] | model [iOS]
 #ifdef __ANDROID__
-	float memoryMax = porting::getTotalSystemMemory();
+	float memoryMax = SDL_GetSystemRAM() / 1024;
 
 	if (memoryMax < 2) {
 		// minimal settings for less than 2GB RAM

src/porting_android.cpp

@@ -280,14 +280,6 @@ std::string getInputDialogValue()
 	return readJavaString((jstring) result);
 }
 
-float getTotalSystemMemory()
-{
-	long pages = sysconf(_SC_PHYS_PAGES);
-	long page_size = sysconf(_SC_PAGE_SIZE);
-	int divisor = 1024 * 1024 * 1024;
-	return (float) (pages * page_size) / (float) divisor;
-}
-
 bool hasRealKeyboard()
 {
 	return device_has_keyboard;

src/porting_android.h

@@ -73,11 +73,6 @@ int getInputDialogState();
  */
 std::string getInputDialogValue();
 
-/**
- * get total device memory
- */
-float getTotalSystemMemory();
-
 /**
  * notify java on server connection
  */