diff --git a/src/Nexus/Program.cs b/src/Nexus/Program.cs
index 7118bdef..5709ad20 100644
--- a/src/Nexus/Program.cs
+++ b/src/Nexus/Program.cs
@@ -76,7 +76,7 @@
     ConfigurePipeline(app);
 
     // initialize app state
-    await InitializeAppAsync(app.Services, pathsOptions, securityOptions, app.Logger);
+    await InitializeAppAsync(app.Services, pathsOptions, app.Logger);
 
     // Run
     app.Run();
@@ -258,7 +258,6 @@ void ConfigurePipeline(WebApplication app)
 async Task InitializeAppAsync(
     IServiceProvider serviceProvider,
     PathsOptions pathsOptions,
-    SecurityOptions securityOptions,
     ILogger logger)
 {
     var appState = serviceProvider.GetRequiredService<AppState>();
diff --git a/src/extensibility/dotnet-extensibility/Extensibility/ExtensibilityUtilities.cs b/src/extensibility/dotnet-extensibility/Extensibility/ExtensibilityUtilities.cs
index 1246481d..6ffa7077 100644
--- a/src/extensibility/dotnet-extensibility/Extensibility/ExtensibilityUtilities.cs
+++ b/src/extensibility/dotnet-extensibility/Extensibility/ExtensibilityUtilities.cs
@@ -34,9 +34,4 @@ internal static int CalculateElementCount(DateTime begin, DateTime end, TimeSpan
     {
         return (int)((end.Ticks - begin.Ticks) / samplePeriod.Ticks);
     }
-
-    internal static DateTime RoundDown(DateTime dateTime, TimeSpan timeSpan)
-    {
-        return new DateTime(dateTime.Ticks - (dateTime.Ticks % timeSpan.Ticks), dateTime.Kind);
-    }
 }
\ No newline at end of file