[llvm] [CodeGen][GC] Remove `GCInfoPrinter` (PR #75033)

[Fangrui Song via llvm-commits]

MaskRay wrote:

Can you expand the statement "This pass is broken and looks like no one uses it." ? I suspect that it is broken due to the following inverted condition

```
bool Printer::runOnFunction(Function &F) {
  if (F.hasGC()) ///////
    return false;
```

https://github.com/llvm/llvm-project/pull/75033