arch/*/*/early_variables.h: drop unused files

Kill off NO_GLOBAL_MIGRATION finally!

Change-Id: Ieb7d9f5590b3a7dd1fd5c0ce2e51337332434dbd
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37054
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/arch/arm/include/arch/early_variables.h

@@ -1,26 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef ARCH_EARLY_VARIABLES_H
-#define ARCH_EARLY_VARIABLES_H
-
-#define CAR_GLOBAL
-
-static inline void *car_get_var_ptr(void *var) { return var; }
-#define car_get_var(var) (var)
-#define car_set_var(var, val) do { (var) = (val); } while (0)
-
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-#endif