kbd67/mkiirgb - allow disabling rgb matrix (#10147)

* kbd67/mkiirgb - allow disabling rgb matrix

wrap rgb matrix funs in defines

* kbd67mkiirgb - changes per review

remove kb funcs that just call the user version. what's left is all rgb
matrix stuff so we can just wrap the whole file.

keyboards/kbdfans/kbd67/mkiirgb/mkiirgb.c

@@ -95,17 +95,7 @@ led_config_t g_led_config = { {
     1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1,
     1, 1, 1, 4, 1, 1, 1, 1, 1
 } };
-#endif
 
-void matrix_init_kb(void) {
-    matrix_init_user();
-}
-void matrix_scan_kb(void) {
-    matrix_scan_user();
-}
-bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
-    return process_record_user(keycode, record);
-}
 void suspend_power_down_kb(void)
 {
     rgb_matrix_set_suspend_state(true);
@@ -126,6 +116,4 @@ void rgb_matrix_indicators_user(void)
         rgb_matrix_set_color(30, 0xFF, 0xFF, 0xFF);
     }
 }
-
-
-
+#endif