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/dm9records/ergoinu/ergoinu.c

@@ -1,5 +1 @@
 #include "ergoinu.h"
-
-void matrix_init_kb(void) {
-	matrix_init_user();
-};

keyboards/dm9records/ergoinu/keymaps/default/keymap.c

@@ -96,6 +96,3 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
 
   return true;
 }
-
-void matrix_init_user(void) {
-}

keyboards/dm9records/ergoinu/keymaps/default_jis/keymap.c

@@ -96,6 +96,3 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   #endif
     return true;
 }
-
-void matrix_init_user(void) {
-}