[lldb] [clang] [clang-tools-extra] Revert "[c++20] P1907R1: Support for generalized non-type template arguments of scalar type." (PR #79302)

[Erich Keane via cfe-commits]

erichkeane wrote:

Waiting on CI bots, then I'll submit this revert, then request this for cherry-pick to the 18 branch.

https://github.com/llvm/llvm-project/pull/79302