samples: Fix configuration scheme

In this commit:
- Removed redundant prj_no_dfu.conf configuration.
- moved all pm_static files to samples main directories and
renamed them to be consistent with the NCS build system and
partition manager requirements.
- Updated documentation regarding the changes.

Signed-off-by: Krzysztof Taborowski <krzysztof.taborowski@nordicsemi.no>

Author: ktaborowski

doc/samples/sid_end_device.rst

@@ -111,12 +111,6 @@ The sample supports the following build types:
      - All from `Requirements`_
      - Release version of the application.
        It can be used to enable only the necessary application functionalities to optimize its performance.
-   * - No DFU
-     - :file:`prj_no_dfu.conf`
-     - All from `Requirements`_
-     - No DFU version of the application.
-       It can be used in simple scenarios where DFU is not required.
-       Additionally, it can be treated as a starting point when integrating the Sidewalk sample with a custom bootloader.
 
 You can build the ``release`` firmware for ``build_target`` by running the following command in the project directory:
 

samples/sid_end_device/CMakeLists.txt

@@ -13,14 +13,6 @@ include(bootloader_version.cmake)
 set(hci_ipc_KCONFIG_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/child_image/hci_ipc/Kconfig.root)
 set(mcuboot_KCONFIG_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/child_image/mcuboot/Kconfig.root)
 
-# Configurations
-if("prj_no_dfu.conf" IN_LIST CONF_FILE)
-    set(PM_FILENAME "pm_static_no_dfu.yml")
-else()
-    set(PM_FILENAME "pm_static_dfu.yml")
-endif()
-set(PM_STATIC_YML_FILE ${CMAKE_CURRENT_SOURCE_DIR}/configuration/${BOARD}/${PM_FILENAME})
-
 # Zephyr CMake project
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 project(sidewalk_sid_end_device)