[clang] [Clang] Optimize -Wunsafe-buffer-usage. (PR #125492)

[Jan Korous via cfe-commits]

jkorous-apple wrote:

I believe we should be able to remove dependency on AST Matchers dylib as AFAIK the only use was in UnsafeBufferUsage.cpp.
https://github.com/llvm/llvm-project/blob/main/clang/lib/Analysis/CMakeLists.txt#L40

https://github.com/llvm/llvm-project/pull/125492