[clang] Clang: Remove `-Wperf-constraint-implies-noexcept` from `-Wall`. (PR #167540)

[via cfe-commits]

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@@ -350,6 +350,8 @@ Improvements to Clang's diagnostics
   Moved the warning for a missing (though implied) attribute on a redeclaration into this group.
   Added a new warning in this group for the case where the attribute is missing/implicit on
   an override of a virtual method.
+- Fixed several false positives and false negatives in function effect (`nonblocking`) analysis. (#GH166078) (#GH166101) (#GH166110)
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Sirraide wrote:

It’s mainly just that we prefer not to make unrelated changes in case something needs to be reverted (which seems unlikely when it comes to the pr that added that release note but still).

https://github.com/llvm/llvm-project/pull/167540