Remove empty override functions (#14312)

* Remove empty override functions, 0-9

* Remove empty override functions, A-D

* Remove empty override functions, E-H

* Remove empty override functions, handwired

* Remove empty override functions, I-L

* Remove empty override functions, M-P

* Remove empty override functions, Q-T

* Remove empty override functions, U-Z

keyboards/xiudi/xd004/keymaps/default/keymap.c

@@ -6,8 +6,3 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     LAYOUT_all(KC_L, KC_O, KC_V, KC_E),
 
 };
-
-// Loop
-void matrix_scan_user(void){
-    // Empty
-};

keyboards/xiudi/xd004/xd004.c

@@ -1,7 +1 @@
 #include "xd004.h"
-
-void led_set_kb(uint8_t usb_led) {
-    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
-
-    led_set_user(usb_led);
-}