[clang-tidy] Remove readability-deleted-default

The deprecation notice was cherrypicked to the release branch in https://github.com/llvm/llvm-project/commit/f8b32989241cca87a8690c8cc404f06ce1f90e4c so its safe to remove this for the 13.X release cycle.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D98612