[ATfE] Remove pre-release package suffix

On the release branch, builds should no longer be identified as
pre-release.

Author: dcandler

arm-software/embedded/CMakeLists.txt

@@ -338,7 +338,7 @@ install(
 # Generate a toolchain ID.
 # Product code 'E' for Embedded.
 set(LLVM_TOOLCHAIN_PROJECT_CODE "E")
-set(LLVM_TOOLCHAIN_VERSION_SUFFIX "pre")
+set(LLVM_TOOLCHAIN_VERSION_SUFFIX "")
 include(${CMAKE_CURRENT_SOURCE_DIR}/../shared/cmake/generate_toolchain_id.cmake)
 
 set(llvmproject_src_dir ${CMAKE_CURRENT_SOURCE_DIR}/../..)