boards native_posix_64: Remove hwmv1 compatible board definition

To use this functionality one must now use the native_posix//64
(variant) version. The old hwmv1 compatible name for the board
was left provisionally while all tests in tree were ported.
That being now done, this old name can be removed.

After this change one cannot build anymore
targeting native_posix_64, but must instead build
targeting native_posix/[native]/64.
For twister tests the old name is already not valid.

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>

boards/deprecated.cmake

@@ -404,6 +404,11 @@ set(mps3_an547_DEPRECATED
 set(mps3_an547_ns_DEPRECATED
     mps3/an547/ns
 )
+
+set(native_posix_64_DEPRECATED
+    native_posix/native/64
+)
+
 set(nrf21540dk_nrf52840_DEPRECATED
     nrf21540dk
 )

boards/native/native_posix/Kconfig

@@ -14,18 +14,6 @@ config BOARD_NATIVE_POSIX
 	  An interrupt controller, timer (system tick), and redirects kernel prints to
 	  stdout.
 
-config BOARD_NATIVE_POSIX_64
-	bool
-	select BOARD_NATIVE_POSIX
-	select 64BIT
-	help
-	  Native POSIX - 64 bit version
-	  Will produce a console Linux process which can be executed natively
-	  as a 64-bit executable.
-	  It provides some minimal needed models:
-	  An interrupt controller, timer (system tick), and redirects kernel prints to
-	  stdout.
-
 if BOARD_NATIVE_POSIX
 
 comment "Native POSIX options"

boards/native/native_posix/Kconfig.native_posix_64

@@ -1,5 +0,0 @@
-# Copyright (c) 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NATIVE_POSIX_64
-	select SOC_POSIX

boards/native/native_posix/board.yml

@@ -5,11 +5,3 @@ boards:
   - name: native
     variants:
     - name: "64"
-
-# This board definition below, together with its respective
-# Kconfig.native_posix_64 exist for backwards compatibility with the hwmv1 board name
-# Once all its usage in tree is removed, or an alias has been introduced they can be removed.
-- name: native_posix_64
-  vendor: zephyr
-  socs:
-  - name: native

boards/native/native_posix/native_posix_64.dts

@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2019 BayLibre SAS
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/dts-v1/;
-#include "native_posix.dts"

boards/native/native_posix/native_posix_64_defconfig

@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-CONFIG_CONSOLE=y
-CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=1000000