[llvm] [DebugInfo][ObjectYAML] Remove duplicate "Flags" field from LabelSym (PR #88194)

[James Henderson via llvm-commits]

jh7370 wrote:

> I'd rather not use my real e-mail, as I don't want to get a bunch of spam

It is my understanding that LLVM has a policy of no GitHub noreply emails; there are many reasons why. Please see the [Discourse thread](https://discourse.llvm.org/t/hidden-emails-on-github-should-we-do-something-about-it) on this topic.

https://github.com/llvm/llvm-project/pull/88194