Keyboard: Fixes for superseded audio and default layer functionality (#4557)

keyboards/lets_split/keymaps/default/config.h

@@ -18,20 +18,19 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
+#pragma once
 
-#include "../../config.h"
+ // place overrides here
+#define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                              SONG(COLEMAK_SOUND), \
+                              SONG(DVORAK_SOUND) \
+                            }
 
 /* Use I2C or Serial, not both */
-
 #define USE_SERIAL
 // #define USE_I2C
 
 /* Select hand configuration */
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS
-
-#endif