[Keyboard] Corne - Remove legacy revision support (#12226)

keyboards/crkbd/keymaps/xyverz/keymap.c

@@ -17,6 +17,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include QMK_KEYBOARD_H
+#include <stdio.h>
 
 enum layer_names {
   _DVORAK,
@@ -101,7 +102,7 @@ layer_state_t layer_state_set_user(layer_state_t state) {
 
 #ifdef OLED_DRIVER_ENABLE
 oled_rotation_t oled_init_user(oled_rotation_t rotation) {
-  if (!is_master) {
+  if (!is_keyboard_master()) {
     return OLED_ROTATION_180;  // flips the display 180 degrees if offhand
   }
   return rotation;
@@ -187,7 +188,7 @@ void oled_render_logo(void) {
 }
 
 void oled_task_user(void) {
-    if (is_master) {
+    if (is_keyboard_master()) {
         oled_render_layer_state();
         oled_render_keylog();
     } else {