Remove RGB_DI_PIN ifdefs (#20218)

keyboards/nightly_boards/n40_o/config.h

@@ -21,7 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DIODE_DIRECTION COL2ROW
 
 #define RGB_DI_PIN B4
-#ifdef RGB_DI_PIN
 #define RGBLED_NUM 12
 #define RGBLIGHT_EFFECT_BREATHING
 #define RGBLIGHT_EFFECT_RAINBOW_MOOD
@@ -34,8 +33,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_EFFECT_ALTERNATING
 #define RGBLIGHT_EFFECT_TWINKLE
 
-#endif
-
 /* Encoders */
 #define ENCODERS_CW_KEY  { { 2, 4 },{ 4, 4 },{ 6, 4 } }
 #define ENCODERS_CCW_KEY { { 1, 4 },{ 3, 4 },{ 5, 4 } }