delete AddLegacyMetrics

Author: phnx47

src/ApplicationBuilderExtensions.cs

@@ -42,14 +42,7 @@ public static IApplicationBuilder UsePrometheusServer(this IApplicationBuilder a
             options.MapPath = "/" + options.MapPath;
 
         if (options.UseDefaultCollectors)
-        {
-#pragma warning disable CS0618
-            if (options.AddLegacyMetrics)
-                options.CollectorRegistry.UseDefaultCollectors(options.MetricPrefixName, options.AddLegacyMetrics);
-            else
-                options.CollectorRegistry.UseDefaultCollectors(options.MetricPrefixName);
-#pragma warning restore CS0618
-        }
+            options.CollectorRegistry.UseDefaultCollectors(options.MetricPrefixName);
 
         var contentType = options.ResponseEncoding != null
             ? $"{Defaults.ContentType}; charset={options.ResponseEncoding.BodyName}"

src/PrometheusOptions.cs

@@ -38,19 +38,4 @@ public class PrometheusOptions
     ///     Metric prefix for Default collectors
     /// </summary>
     public string MetricPrefixName { get; set; } = string.Empty;
-
-    /// <summary>
-    ///     Add legacy metrics to Default collectors
-    /// </summary>
-    ///  <remarks>
-    ///     Some metrics renamed since v5, <c>AddLegacyMetrics</c> will add old and new name<br />
-    ///     <para>
-    ///       process_virtual_bytes -> process_virtual_memory_bytes<br />
-    ///       process_private_bytes -> process_private_memory_bytes<br />
-    ///       process_working_set -> process_working_set_bytes<br />
-    ///       dotnet_totalmemory -> dotnet_total_memory_bytes
-    ///     </para>
-    /// </remarks>
-    [Obsolete("'AddLegacyMetrics' will be removed in future versions")]
-    public bool AddLegacyMetrics { get; set; }
 }