Minor HAL cleanup

Marlin/src/HAL/LPC1768/main.cpp

@@ -90,7 +90,7 @@ void HAL_init() {
 
   //debug_frmwrk_init();
   //_DBG("\n\nDebug running\n");
-  // Initialise the SD card chip select pins as soon as possible
+  // Initialize the SD card chip select pins as soon as possible
   #if PIN_EXISTS(SS)
     OUT_WRITE(SS_PIN, HIGH);
   #endif

Marlin/src/HAL/STM32/SoftwareSerial.h

@@ -29,9 +29,7 @@
  * The latest version of this library can always be found at
  * http://arduiniana.org.
  */
-
-#ifndef SOFTWARESERIAL_H
-#define SOFTWARESERIAL_H
+#pragma once
 
 #include <Arduino.h>
 
@@ -64,7 +62,6 @@ class SoftwareSerial : public Stream {
     uint32_t delta_start = 0;
 
     // static data
-    static bool initialised;
     static HardwareTimer timer;
     static const IRQn_Type timer_interrupt_number;
     static uint32_t timer_interrupt_priority;
@@ -115,5 +112,3 @@ class SoftwareSerial : public Stream {
 
     using Print::write;
 };
-
-#endif // SOFTWARESERIAL_H