🎨 Pragma GCC cleanup

Marlin/src/HAL/DUE/HAL.h

@@ -168,16 +168,14 @@ void HAL_init();
 //
 void _delay_ms(const int delay);
 
+#pragma GCC diagnostic push
 #if GCC_VERSION <= 50000
-  #pragma GCC diagnostic push
   #pragma GCC diagnostic ignored "-Wunused-function"
 #endif
 
 int freeMemory();
 
-#if GCC_VERSION <= 50000
-  #pragma GCC diagnostic pop
-#endif
+#pragma GCC diagnostic pop
 
 #ifdef __cplusplus
   extern "C" {