[llvm-readobj] Remove an unnecessary cast (NFC)#151851

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

kazutakahirata:cleanup_20250802_cast_llvm_readobjkazutakahirata/llvm-project:cleanup_20250802_cast_llvm_readobjCopy head branch name to clipboard