Remove useless "ifdef KEYBOARD_*" (#20078)

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

keyboards/kapl/rev1/rev1.c

@@ -1,6 +1,6 @@
 // Copyright 2022 Alexander Lozyuk (@keyzog)
 // SPDX-License-Identifier: GPL-2.0-or-later
-#include "kapl.h"
+#include "rev1.h"
 
 #ifdef RGB_MATRIX_ENABLE
 led_config_t g_led_config = { {

keyboards/kapl/rev1/rev1.h

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 #pragma once
 
-#include "kapl.h"
+#include "quantum.h"
 
 /* This a shortcut to help you visually see your layout.
  *