tests/subsys/fs: Use hwmv2 native targets identifiers

For the 64 bit targets, change identifiers to the new hwmv2 ones.
And remove redundant overlays (which were equal for the 32
and 64 bit versions)

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

tests/subsys/fs/ext2/boards/native_sim_64.overlay

@@ -1,7 +0,0 @@
-/*
- * Copyright (c) 2023 Antmicro
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include "native_sim.overlay"

tests/subsys/fs/ext2/testcase.yaml

@@ -4,7 +4,7 @@ tests:
   filesystem.ext2.default:
     platform_allow:
       - native_sim
-      - native_sim_64
+      - native_sim/native/64
       - hifive_unmatched
       - bl5340_dvk/nrf5340/cpuapp
     extra_args:
@@ -13,7 +13,7 @@ tests:
   filesystem.ext2.big:
     platform_allow:
       - native_sim
-      - native_sim_64
+      - native_sim/native/64
     extra_args:
       - CONF_FILE=prj_big.conf
       - EXTRA_DTC_OVERLAY_FILE="ramdisk_big.overlay"
@@ -29,5 +29,5 @@ tests:
   filesystem.ext2.flash:
     platform_allow:
       - native_sim
-      - native_sim_64
+      - native_sim/native/64
     extra_args: CONF_FILE=prj_flash.conf

tests/subsys/fs/fcb/testcase.yaml

@@ -5,9 +5,9 @@ tests:
       - nrf52dk/nrf52832
       - nrf51dk/nrf51822
       - native_posix
-      - native_posix_64
+      - native_posix/native/64
       - native_sim
-      - native_sim_64
+      - native_sim/native/64
       - mr_canhubk3
     tags: flash_circural_buffer
     integration_platforms:

tests/subsys/fs/littlefs/boards/native_sim_64.overlay

@@ -1,7 +0,0 @@
-/*
- * Copyright (c) 2019 Jan Van Winkel <jan.van_winkel@dxplore.eu>
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include "native_sim.overlay"

tests/subsys/fs/littlefs/testcase.yaml

@@ -5,7 +5,7 @@ common:
   platform_allow:
     - nrf52840dk/nrf52840
     - native_sim
-    - native_sim_64
+    - native_sim/native/64
     - mimxrt1060_evk
     - mr_canhubk3
   integration_platforms: