Since LLVM 13, llvm-dlltool can imply the target architecture from
a triple prefix on the tool name, so there's no more need for a
wrapper.
The *-dlltool tools are now symlinks to the main llvm-dlltool
executable. In the Windows distribution, the *-dlltool.exe used to be
copies of dlltool-wrapper.exe (which is small; 15 KB). Now they
will instead be copies of llvm-dlltool.exe. Luckily, thanks to
building with -DLLVM_LINK_LLVM_DYLIB=ON by default, llvm-dlltool.exe
is only a mere 65 KB, while it used to be much larger, e.g. around
11 MB in older releases.