Remove deprecated logging methods (#6516)

src/Identity/Startup.cs

@@ -170,14 +170,11 @@ public class Startup
     public void Configure(
         IApplicationBuilder app,
         IWebHostEnvironment env,
-        IHostApplicationLifetime appLifetime,
         GlobalSettings globalSettings,
         ILogger<Startup> logger)
     {
         IdentityModelEventSource.ShowPII = true;
 
-        app.UseSerilog(env, appLifetime, globalSettings);
-
         // Add general security headers
         app.UseMiddleware<SecurityHeadersMiddleware>();