Revert "Add User Agent to openapi spec"

This reverts commit d5f1355.

Author: hhvrc

Common/Swagger/AttributeFilter.cs

@@ -1,6 +1,4 @@
 using Microsoft.AspNetCore.Authorization;
-using Microsoft.Net.Http.Headers;
-using Microsoft.OpenApi.Any;
 using Microsoft.OpenApi.Models;
 using OpenShock.Common.Authentication;
 using OpenShock.Common.DataAnnotations.Interfaces;
@@ -36,15 +34,6 @@ public void Apply(OpenApiSchema schema, SchemaFilterContext context)
 
     public void Apply(OpenApiOperation operation, OperationFilterContext context)
     {
-        operation.Parameters.Add(new OpenApiParameter
-        {
-            Required = false,
-            In = ParameterLocation.Header,
-            Name = HeaderNames.UserAgent,
-            AllowEmptyValue = false,
-            Example = new OpenApiString("MyApiClient/1.0")
-        });
-        
         // Apply OpenShock Parameter Attributes
         foreach (var attribute in context.MethodInfo?.GetCustomAttributes(true).OfType<IOperationAttribute>() ?? [])
         {