[clang] [analyzer][NFC] Remove check::BranchCondition from debug.DumpTraversal (PR #113906)

[Donát Nagy via cfe-commits]

NagyDonat wrote:

Thanks for the information!

I'll merge this now and I might create a followup commit to remove the rest of `TraversalChecker.cpp` later.

https://github.com/llvm/llvm-project/pull/113906