[Keyboard] Remove locking support for Macro3 (#15496)

Co-authored-by: filterpaper <filterpaper@localhost>

keyboards/macro3/config.h

@@ -31,9 +31,3 @@
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 5
 
-/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
-#define LOCKING_SUPPORT_ENABLE
-
-/* Locking resynchronize hack */
-#define LOCKING_RESYNC_ENABLE
-