Why does analyzer CA2226 exist?

[gewarren]

CA2226 flags types that implement the equality operator but not the inequality operator (or vice versa). But both the C# and VB compilers also flag this situation (CS0216 and BC33033), and I couldn't even get CA2226 to fire.

[Youssef1313]

It's marked as candidate for removal.

sdk/src/Microsoft.CodeAnalysis.NetAnalyzers/src/Microsoft.CodeAnalysis.NetAnalyzers/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/OperatorsShouldHaveSymmetricalOverloads.cs

Line 26 in 7538a89

RuleLevel.CandidateForRemoval, // C# compiler reports an error

I think we should revise all candidate for removal analyzers.

Related: dotnet/roslyn-analyzers#6349