[Keymap] Remove LAYOUT_kc macros from edvorakjp keymaps (#12217)

keyboards/helix/rev2/keymaps/edvorakjp/oled.h

@@ -1,19 +1,12 @@
-#ifndef OLED_USER_H
-#define OLED_USER_H
+#pragma once
 
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#include "ssd1306.h"
 #include "edvorakjp.h"
 
-//assign the right code to your layers for OLED display
-#define L_BASE 0
-
-extern uint8_t is_master;
 extern bool japanese_mode;
 
-void matrix_update(struct CharacterMatrix *dest,
-                   const struct CharacterMatrix *source);
-void render_status(struct CharacterMatrix *matrix);
-void iota_gfx_task_user(void);
-
-#endif // OLED_CONFIG_USER_H
+void            render_host_led_state(void);
+void            render_layer_state(void);
+void            render_logo(void);
+void            render_mode_icon(bool is_windows);
+oled_rotation_t oled_init_user(oled_rotation_t rotation);
+void            oled_task_user(void);