Move M17 to cpp

Marlin/src/Marlin.cpp

@@ -357,8 +357,6 @@ void suicide() {
  ***************** GCode Handlers *****************
  **************************************************/
 
-#include "gcode/control/M17.h"
-
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
   // For M125, M600, M24
   #include "gcode/feature/pause/common.h"

Marlin/src/gcode/control/M17.cpp

@@ -20,10 +20,14 @@
  *
  */
 
+#include "../gcode.h"
+#include "../../lcd/ultralcd.h"
+#include "../../Marlin.h"
+
 /**
  * M17: Enable power on all stepper motors
  */
-void gcode_M17() {
+void GcodeSuite::M17() {
   LCD_MESSAGEPGM(MSG_NO_MOVE);
   enable_all_steppers();
 }

Marlin/src/gcode/gcode.cpp

@@ -116,7 +116,6 @@ void GcodeSuite::dwell(millis_t time) {
 //
 // Placeholders for non-migrated codes
 //
-extern void gcode_M17();
 extern void gcode_M18_M84();
 extern void gcode_M20();
 extern void gcode_M21();
@@ -422,7 +421,7 @@ void GcodeSuite::process_next_command() {
       #endif
 
       case 17: // M17: Enable all stepper motors
-        gcode_M17();
+        M17();
         break;
 
       #if ENABLED(SDSUPPORT)