[clang] [Clang][NFC] Mark 3106 as implemented. (PR #192256)

[Vlad Serebrennikov via cfe-commits]

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@@ -0,0 +1,15 @@
+// RUN: %clang_cc1 -std=c++98 -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected %s
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Endilll wrote:

```suggestion
// RUN: %clang_cc1 -std=c++98 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
```
I know there are several files who put `%s` after `-verify`, which can have variable length. I'll fix them later.

https://github.com/llvm/llvm-project/pull/192256