--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -380,9 +380,6 @@
 run_vk_xml_generate(helper_file_generator.py vk_object_types.h)
 run_vk_xml_generate(helper_file_generator.py vk_extension_helper.h)
 run_vk_xml_generate(helper_file_generator.py vk_typemap_helper.h)
-if(BUILD_LAYERS)
-    run_external_revision_generate(${EXTERNAL_SOURCE_ROOT}/glslang/External/spirv-tools SPIRV_TOOLS_COMMIT_ID spirv_tools_commit_id.h)
-endif()