🎨 Pragma GCC cleanup

Marlin/src/HAL/LINUX/HAL.h

@@ -79,16 +79,14 @@ extern MSerialT usb_serial;
 inline void HAL_init() {}
 
 // Utility functions
+#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
 
 // ADC
 #define HAL_ADC_VREF           5.0