Fix L6470 init and options

Marlin/src/config/examples/Felix/Configuration_adv.h

@@ -1082,57 +1082,46 @@
   //#define E4_IS_L6470
 
   #define X_MICROSTEPS      16 // number of microsteps
-  #define X_K_VAL           50 // 0 - 255, Higher values, are higher power. Be careful not to go too high
   #define X_OVERCURRENT   2000 // maxc current in mA. If the current goes over this value, the driver will switch off
   #define X_STALLCURRENT  1500 // current in mA where the driver will detect a stall
 
   #define X2_MICROSTEPS     16
-  #define X2_K_VAL          50
   #define X2_OVERCURRENT  2000
   #define X2_STALLCURRENT 1500
 
   #define Y_MICROSTEPS      16
-  #define Y_K_VAL           50
   #define Y_OVERCURRENT   2000
   #define Y_STALLCURRENT  1500
 
   #define Y2_MICROSTEPS     16
-  #define Y2_K_VAL          50
   #define Y2_OVERCURRENT  2000
   #define Y2_STALLCURRENT 1500
 
   #define Z_MICROSTEPS      16
-  #define Z_K_VAL           50
   #define Z_OVERCURRENT   2000
   #define Z_STALLCURRENT  1500
 
   #define Z2_MICROSTEPS     16
-  #define Z2_K_VAL          50
   #define Z2_OVERCURRENT  2000
   #define Z2_STALLCURRENT 1500
 
   #define E0_MICROSTEPS     16
-  #define E0_K_VAL          50
   #define E0_OVERCURRENT  2000
   #define E0_STALLCURRENT 1500
 
   #define E1_MICROSTEPS     16
-  #define E1_K_VAL          50
   #define E1_OVERCURRENT  2000
   #define E1_STALLCURRENT 1500
 
   #define E2_MICROSTEPS     16
-  #define E2_K_VAL          50
   #define E2_OVERCURRENT  2000
   #define E2_STALLCURRENT 1500
 
   #define E3_MICROSTEPS     16
-  #define E3_K_VAL          50
   #define E3_OVERCURRENT  2000
   #define E3_STALLCURRENT 1500
 
   #define E4_MICROSTEPS     16
-  #define E4_K_VAL          50
   #define E4_OVERCURRENT  2000
   #define E4_STALLCURRENT 1500