[clang] [libc] [libcxx] [llvm] Revert "[NVPTX] Make ctor/dtor lowering always enabled in NVPTX" (PR #126610)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

A fix-forward for a `-Werror` failure is much easier https://github.com/llvm/llvm-project/commit/07f21541424c95b4451292b288e5d69272c8020c.

https://github.com/llvm/llvm-project/pull/126610