Keyboard: Refactor Levinson to use split common code (#3639)

* Migrate Levinson to use split_common code

* Update keymap

layouts/community/ortho_4x12/bakingpy/config.h

@@ -1,7 +1,4 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include QMK_KEYBOARD_CONFIG_H
+#pragma once
 
 /* Use I2C or Serial, not both */
 
@@ -9,7 +6,6 @@
 // #define USE_I2C
 
 /* Select hand configuration */
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS
@@ -26,5 +22,3 @@
 #ifdef AUDIO_ENABLE
 #define C6_AUDIO
 #endif
-
-#endif