Remove WithOpenApi call from project template as requested in review

Co-authored-by: captainsafia <[email protected]>

Author: Copilot

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/Program.MinimalAPIs.OrgOrIndividualB2CAuth.cs

@@ -1,7 +1,6 @@
 #if (GenerateApi)
 using System.Net.Http;
 #endif
-#pragma warning disable ASPDEPR002 // WithOpenApi is deprecated
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 #if (GenerateGraph)
@@ -129,7 +128,6 @@
 #if (EnableOpenAPI)
 })
 .WithName("GetWeatherForecast")
-.WithOpenApi()
 .RequireAuthorization();
 #else
 })