[Keyboard] Fix compile size for the Lets Split Sockets via keymap (#13691)

keyboards/lets_split/keymaps/via/config.h

@@ -38,3 +38,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #undef RGBLED_NUM
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 10
+
+#define NO_MUSIC_MODE

keyboards/lets_split/sockets/config.h

@@ -49,11 +49,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D0
 
-/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
-#define LOCKING_SUPPORT_ENABLE
-/* Locking resynchronize hack */
-#define LOCKING_RESYNC_ENABLE
-
 /* ws2812 RGB LED */
 #define RGB_DI_PIN D4