Remove matrix size defines (#19581)

keyboards/handwired/prime_exl_plus/config.h

@@ -18,10 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 
 
-/* key matrix size */
-#define MATRIX_ROWS 10
-#define MATRIX_COLS 10
-
 /* Keyboard Matrix Assignments */
 #define MATRIX_ROW_PINS { D2, D6, B4, F1, E6, F0, F4, B5, D7, D3 }
 #define MATRIX_COL_PINS { F5, F6, F7, C7, C6, B6, B7, B3, D1, D0 }