Move M48 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#if ENABLED(Z_MIN_PROBE_REPEATABILITY_TEST)
-  #include "gcode/calibrate/M48.h"
-#endif
-
 #include "gcode/stats/M75.h"
 #include "gcode/stats/M76.h"
 #include "gcode/stats/M77.h"

Marlin/src/gcode/calibrate/M48.h → Marlin/src/gcode/calibrate/M48.cpp

  *
  */
 
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(Z_MIN_PROBE_REPEATABILITY_TEST)
+
+#include "../gcode.h"
+#include "../../module/motion.h"
+#include "../../module/probe.h"
+
+#if DISABLED(DELTA)
+  #include "../../feature/bedlevel/bedlevel.h"
+#endif
+
 /**
  * M48: Z probe repeatability measurement function.
  *
  * Any information generated by a prior G29 Bed leveling command will be lost and need to be
  * regenerated.
  */
-void gcode_M48() {
+void GcodeSuite::M48() {
 
   if (axis_unhomed_error()) return;
 
 
   report_current_position();
 }
+
+#endif // Z_MIN_PROBE_REPEATABILITY_TEST

Marlin/src/gcode/gcode.cpp

 // Placeholders for non-migrated codes
 //
 extern void gcode_M18_M84();
-extern void gcode_M48();
 extern void gcode_M75();
 extern void gcode_M76();
 extern void gcode_M77();
       #endif
 
       #if ENABLED(Z_MIN_PROBE_REPEATABILITY_TEST)
-        case 48: // M48: Z probe repeatability test
-          gcode_M48();
-          break;
-      #endif // Z_MIN_PROBE_REPEATABILITY_TEST
+        case 48: M48(); break;    // M48: Z probe repeatability test
+      #endif
 
       #if ENABLED(UBL_G26_MESH_VALIDATION)
         case 49: M49(); break;    // M49: Turn on or off G26 debug flag for verbose output