Cleanup Default Keymaps (#5442)

* Cleanup Default Keymaps to conform to QMK Firmware standards

* Minor fixes

* Revert some changes

keyboards/vision_division/keymaps/default/keymap.c

@@ -1,13 +1,6 @@
-#include "vision_division.h"
-#include "action_layer.h"
-#include "eeconfig.h"
+#include QMK_KEYBOARD_H
 #include "led.h"
 
-#ifdef AUDIO_ENABLE
-    #include "audio.h"
-    #include "song_list.h"
-#endif
-
 enum keyboard_layers {
   LAYER_QWERTY = 0,
   LAYER_UPPER,