doc: tf-m: remove SPM migration guide

Removed the migration guide for SPM to TF-M from the documentation.
NCSDK-32738.

Signed-off-by: Grzegorz Ferenc <[email protected]>

Author: greg-fer

doc/nrf/links.txt

@@ -473,6 +473,8 @@
 .. _`known issues for nRF Connect SDK v1.4.1`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v1-4-1
 .. _`known issues for nRF Connect SDK v1.4.0`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v1-4-0
 
+.. _`Migrating from Secure Partition Manager to Trusted Firmware-M`: https://docs.nordicsemi.com/bundle/ncs-2.0.0/page/nrf/ug_tfm.html#migrating_from_secure_partition_manager_to_trusted_firmware-m
+
 .. _`connecting to nRF Cloud`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/libraries/networking/nrf_cloud.html#connecting
 
 .. _`TF-M documentation`: https://docs.nordicsemi.com/bundle/ncs-latest/page/tfm/index.html

doc/nrf/releases_and_maturity/migration/migration_guide_1.x_to_2.x.rst

@@ -46,7 +46,7 @@ Trusted Firmware M (TF-M) replaces the Secure Partition Manager (SPM) for secure
 TF-M is now enabled by default for most nRF9160 and nRF5340 applications and samples.
 
 Required action:
-   To start using TF-M instead of SPM in your application, see the information in :ref:`spm_to_tfm_migration`.
+   To start using TF-M instead of SPM in your application, see the information in `Migrating from Secure Partition Manager to Trusted Firmware-M`_ in the |NCS| v2.0.0 documentation.
 
 Switch from TinyCBOR to zcbor
 *****************************

doc/nrf/releases_and_maturity/migration/migration_guide_spm_to_tf-m.rst

@@ -1203,3 +1203,5 @@ Documentation
   * The standalone page for getting started with the nRF9160 DK.
     This page has been replaced by the `Quick Start app`_ that supports the nRF9160 DK.
     The content about connecting the DK to nRF Cloud is now a standalone :ref:`nrf9160_gs_connecting_dk_to_cloud` page in the :ref:`ug_nrf9160` section.
+  * The section about migrating from Secure Partition Manager to Trusted Firmware-M, which was removed in the |NCS| v2.1.0 release.
+    If you still need to migrate, see the `information in the nRF Connect SDK v2.0.0 documentation <Migrating from Secure Partition Manager to Trusted Firmware-M_>`_.

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -130,7 +130,7 @@ TF-M's Secure Partition Manager (SPM) backend may also be configured, depending
 
 .. note::
     Do not confuse TF-M's Secure Partition Manager with Secure Partition Manager that was removed in the |NCS| v2.1.0.
-    See :ref:`migration guide <spm_to_tfm_migration>`.
+    See also `Migrating from Secure Partition Manager to Trusted Firmware-M`_ in the |NCS| v2.0.0 documentation.
 
 .. list-table:: SPM backends
    :header-rows: 1