[ADT] Simplify enable_if_struct_deref_supported (NFC)#159939

kazutakahirata merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

kazutakahirata:cleanup_20250920_10TMP_ADT_fallible_iterator_enable_if_struct_deref_supportedkazutakahirata/llvm-project:cleanup_20250920_10TMP_ADT_fallible_iterator_enable_if_struct_deref_supportedCopy head branch name to clipboard