Remove redundant KC_TRNS and KC_NO fillers in default keymaps (#5152)

keyboards/mxss/templates/keymap.c

@@ -16,9 +16,6 @@
 #include QMK_KEYBOARD_H
 #include "mxss_frontled.h"
 
-// Helpful defines
-#define _______ KC_TRNS
-
 // Predefined colors for layers
 // Format: {hue, saturation}
 // {0, 0} to turn off the LED
@@ -39,4 +36,4 @@ enum custom_keycodes {
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 __KEYMAP_GOES_HERE__
-};
+};