[CMake] Remove 'touch' post process for object files

Author: rintaro

cmake/modules/AddSwiftHostLibrary.cmake

@@ -92,7 +92,7 @@ function(add_swift_syntax_library name)
   add_custom_command(
     TARGET ${target}
     POST_BUILD
-    COMMAND "${CMAKE_COMMAND}" -E touch_nocreate $<TARGET_FILE:${target}> $<TARGET_OBJECTS:${target}> "${module_base}"
+    COMMAND "${CMAKE_COMMAND}" -E touch_nocreate $<TARGET_FILE:${target}> "${module_base}"
     COMMAND_EXPAND_LISTS
     COMMENT "Update mtime of library outputs workaround")