Remove matrix size defines (#19581)

keyboards/primekb/prime_o/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 8
-
 /* Keyboard Matrix Assignments */
 #define MATRIX_ROW_PINS { D4, D6, B1, C5, B4, B3, C4, B2, B0, D5 }
 #define MATRIX_COL_PINS { B6, B5, C7, C6, D2, D1, D0, C2 }