modules: trusted-firmware-m: Remove 'xtools' toolchain support

This commit removes the TF-M support for the `xtools` toolchain variant,
which has been deprecated since Zephyr v3.3.0 and now removed.

Note that `zephyr` toolchain variant must be used instead of `xtools` when
building with Zephyr SDK.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

modules/trusted-firmware-m/CMakeLists.txt

@@ -210,10 +210,6 @@ if (CONFIG_BUILD_WITH_TFM)
     set(TFM_TOOLCHAIN_FILE "toolchain_GNUARM.cmake")
     set(TFM_TOOLCHAIN_PREFIX "arm-none-eabi")
     set(TFM_TOOLCHAIN_PATH ${GNUARMEMB_TOOLCHAIN_PATH}/bin)
-  elseif(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "xtools")
-    set(TFM_TOOLCHAIN_FILE "toolchain_GNUARM.cmake")
-    set(TFM_TOOLCHAIN_PREFIX "arm-zephyr-eabi")
-    set(TFM_TOOLCHAIN_PATH ${XTOOLS_TOOLCHAIN_PATH}/arm-zephyr-eabi/bin)
   else()
     message(FATAL_ERROR "Unsupported ZEPHYR_TOOLCHAIN_VARIANT: ${ZEPHYR_TOOLCHAIN_VARIANT}")
   endif()