[clang] Revert "[clang][win] Define vector deleting dtor body for declared-only dtor if needed" (PR #188218)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

> I think #188223 will fix this, so if people are happy with that maybe we can just land it instead.

Wow, thank you!

https://github.com/llvm/llvm-project/pull/188218