Remove unused action_get_macro() usages in user files (#11165)

layouts/community/ergodox/supercoder/keymap.c

@@ -57,16 +57,3 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
                                                                ,KC_ENT  ,KC_ENT   ,KC_ENT
                   ),
 };
-
-const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
-{
-  return MACRO_NONE;
-};
-
-// Runs just one time when the keyboard initializes.
-void matrix_init_user(void) {
-};
-
-// Runs constantly in the background, in a loop.
-void matrix_scan_user(void) {
-}