Remove unused MATRIX_HAS_GHOST from config.h (#19726)

keyboards/handwired/t111/config.h

@@ -34,9 +34,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 5
 
-/* define if matrix has ghost (lacks anti-ghosting diodes) */
-//#define MATRIX_HAS_GHOST
-
 /*
  * Feature disable options
  *  These options are also useful to firmware size reduction.