Move RGBLED_SPLIT to data driven (#21113)

Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/rura66/rev1/config.h

@@ -23,7 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef RGBLIGHT_ENABLE
   #define RGBLED_NUM 66 // Number of LEDs
   #define RGBLIGHT_SPLIT
-  #define RGBLED_SPLIT { 33, 33 }
   #define RGBLIGHT_HUE_STEP 8
   #define RGBLIGHT_SAT_STEP 8
   #define RGBLIGHT_VAL_STEP 8

keyboards/rura66/rev1/info.json

@@ -12,7 +12,8 @@
     "driver": "WS2812"
   },
   "rgblight": {
-    "max_brightness": 120
+    "max_brightness": 120,
+    "split_count": [33, 33]
   },
   "matrix_pins": {
     "cols": ["F4", "F5", "F6", "F7", "B1", "B3", "B2"],