Remove matrix size defines (#19581)

keyboards/handwired/axon/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 4
-#define MATRIX_COLS 11
-
 /* key matrix pins */
 #define MATRIX_ROW_PINS { D5, D6, D4, D0 }
 #define MATRIX_COL_PINS { B0, D7, B1, B2, C0, C1, C2, C3, C4, C5, D1 }