Remove unused code

src/Features/Core/Portable/PopulateSwitch/AbstractPopulateSwitchDiagnosticAnalyzer.cs

@@ -36,7 +36,7 @@ protected AbstractPopulateSwitchDiagnosticAnalyzer(string diagnosticId)
 
         public sealed override DiagnosticAnalyzerCategory GetAnalyzerCategory() => DiagnosticAnalyzerCategory.SemanticSpanAnalysis;
 
-        protected override void InitializeWorker(AnalysisContext context)
+        protected sealed override void InitializeWorker(AnalysisContext context)
             => context.RegisterOperationAction(AnalyzeOperation, this.OperationKind);
 
         private void AnalyzeOperation(OperationAnalysisContext context)

src/Features/Core/Portable/PopulateSwitch/AbstractPopulateSwitchExpressionDiagnosticAnalyzer.cs

@@ -17,19 +17,6 @@ protected AbstractPopulateSwitchExpressionDiagnosticAnalyzer()
         {
         }
 
-        protected override void InitializeWorker(AnalysisContext context)
-        {
-            base.InitializeWorker(context);
-            context.RegisterOperationAction(AnalyzeSwitchOperation, OperationKind.Switch);
-        }
-
-
-        private void AnalyzeSwitchOperation(OperationAnalysisContext context)
-        {
-            var syntax = context.Operation.Syntax;
-            ;
-        }
-
         protected sealed override OperationKind OperationKind => OperationKind.SwitchExpression;
 
         protected sealed override ICollection<ISymbol> GetMissingEnumMembers(ISwitchExpressionOperation operation)