Refactor of lets_split_eh to enable RGB split animations (#6411)

keyboards/lets_split_eh/config.h

@@ -15,8 +15,7 @@ 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_H
-#define CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
@@ -35,8 +34,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* Set 0 if debouncing isn't needed */
 #define DEBOUNCE 5
-
-/* serial.c configuration for split keyboard */
-//#define SOFT_SERIAL_PIN D0
-
-#endif