Remove useless "ifdef KEYBOARD_*" (#20078)

Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/program_yoink/program_yoink.c

@@ -14,7 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "program_yoink.h"
+#include "quantum.h"
 
 bool encoder_update_kb(uint8_t index, bool clockwise) {
     if (!encoder_update_user(index, clockwise)) return false;