Remove matrix size defines (#19581)

keyboards/maple_computing/christmas_tree/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 6
-#define MATRIX_COLS 1
-
 /* Planck PCB default pin-out */
 #define MATRIX_ROW_PINS { D3, F4, D0, F6, F5, D4 }
 #define MATRIX_COL_PINS { D1 }