Remove matrix size defines (#19581)

keyboards/biacco42/ergo42/rev1/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 
 
-/* key matrix size */
-// Rows are doubled-up
-#define MATRIX_ROWS 8
-#define MATRIX_COLS 7
-
 // wiring of each half
 #define MATRIX_ROW_PINS { D7, E6, B4, B5 }
 #define MATRIX_COL_PINS { F5, F6, F7, B1, B3, B2, B6 }