[clang] [clang][utils] Remove ClangDataFormat.py for now (PR #96385)

[Michael Buch via cfe-commits]

Michael137 wrote:

> LGTM
> 
> > We should eventually develop proper formatters for Clang data-types, but these are currently not ready.
> 
> Yes, I'm still working on that in background. LLDB has to have a way to understand custom RTTI we use in AST nodes for statements and types, because adding a vtable pointer will increase memory pressure. I'm working on such mechanism, and that's why it's taking so long.

Thanks, greatly appreciated!

https://github.com/llvm/llvm-project/pull/96385