Move RGBLIGHT_LIMIT_VAL to data driven (#20974)

Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/rart/rart4x4/config.h

@@ -37,5 +37,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_HUE_STEP 8
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8
-#define RGBLIGHT_LIMIT_VAL 240
 #define RGBLIGHT_SLEEP

keyboards/rart/rart4x4/info.json

@@ -11,6 +11,9 @@
     "ws2812": {
         "pin": "D3"
     },
+    "rgblight": {
+        "max_brightness": 240
+    },
     "matrix_pins": {
         "cols": ["F7", "B2", "B5", "B4"],
         "rows": ["F4", "B6", "B3", "B1"]