[clang] [CIR] Remove inferred context from pointer type getters (PR #138858)

[Henrich Lauko via cfe-commits]

xlauko wrote:

### Merge activity

* **May 7, 1:16 PM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/138858).


https://github.com/llvm/llvm-project/pull/138858