[clang] [llvm] Enable unnecessary-virtual-specifier by default (PR #133265)

[via llvm-commits]

https://github.com/Sirraide commented:

The release note is still missing.
ut other than that this looks fine I think, but I’d say wait a few days before merging in case anyone else has any opinions as to whether this should be enabled by default or not.

https://github.com/llvm/llvm-project/pull/133265