Set homing feedrates individually

Marlin/example_configurations/delta/generic/Configuration.h

@@ -842,10 +842,8 @@
  * MOVEMENT SETTINGS
  */
 
-// delta homing speeds must be the same on xyz
-#define HOMING_FEEDRATE_XYZ (200*60)
-#define HOMING_FEEDRATE_E 0
-#define HOMING_FEEDRATE { HOMING_FEEDRATE_XYZ, HOMING_FEEDRATE_XYZ, HOMING_FEEDRATE_XYZ, HOMING_FEEDRATE_E }
+// Delta only homes to Z
+#define HOMING_FEEDRATE_Z  (200*60)
 
 // default settings
 // delta speeds must be the same on xyz