Remove matrix size defines (#19581)

keyboards/w1_at/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 5
-#define MATRIX_COLS 20
-
 #define MATRIX_ROW_PINS { A2, B9, B8, B5, B4 }
 #define MATRIX_COL_PINS { B7, A0, A1, B1, B0, A7, A6, A5, A4, A3, B2, B10, B11, B12, B13, B14, B15, A8, A9, A10 }