Remove empty override functions (#14312)

* Remove empty override functions, 0-9

* Remove empty override functions, A-D

* Remove empty override functions, E-H

* Remove empty override functions, handwired

* Remove empty override functions, I-L

* Remove empty override functions, M-P

* Remove empty override functions, Q-T

* Remove empty override functions, U-Z

keyboards/orthodox/rev3/rev3.c

@@ -21,19 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "orthodox.h"
 
-void matrix_init_kb(void) {
-
-  //// // green led on
-  //// DDRD |= (1<<5);
-  //// PORTD &= ~(1<<5);
-
-  //// // orange led on
-  //// DDRB |= (1<<0);
-  //// PORTB &= ~(1<<0);
-
-  matrix_init_user();
-};
-
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap