[nrf fromtree] Revert "tf-m: Silence harmless version warning"

This reverts commit 33786b5.

Reverting it because the upstream PR has been abandoned, and
this extra CMake variable is causing the warning
"Manually-specified variables were not used by the project".

As of now the version warning doesn't come up.

Signed-off-by: Tomi Fontanilles <[email protected]>
(cherry picked from commit 2c57519)

Author: tomi-font

modules/trusted-firmware-m/CMakeLists.txt

@@ -241,7 +241,6 @@ if (CONFIG_BUILD_WITH_TFM)
       -DCMAKE_BUILD_TYPE=${TFM_CMAKE_BUILD_TYPE}
       -DTFM_PLATFORM=${CONFIG_TFM_BOARD}
       -DCONFIG_TFM_BUILD_LOG_QUIET=ON
-      -DSILENCE_TFM_VERSION_WARNING=ON
       -DCONFIG_TFM_MEMORY_USAGE_QUIET=OFF
       -DPython3_EXECUTABLE=${Python3_EXECUTABLE}
       ${TFM_CMAKE_ARGS}