Remove unused code

src/OpenTelemetry.Instrumentation.Http/HttpRequestMessageContextPropagation.cs

@@ -9,16 +9,6 @@ namespace OpenTelemetry.Instrumentation.Http;
 
 internal static class HttpRequestMessageContextPropagation
 {
-    internal static Func<HttpRequestMessage, string, IEnumerable<string>> HeaderValuesGetter => (request, name) =>
-    {
-        if (request.Headers.TryGetValues(name, out var values))
-        {
-            return values;
-        }
-
-        return null;
-    };
-
     internal static Action<HttpRequestMessage, string, string> HeaderValueSetter => (request, name, value) =>
     {
         request.Headers.Remove(name);

src/OpenTelemetry.Instrumentation.Http/Implementation/HttpTagHelper.cs

@@ -1,47 +1,13 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
-using System.Collections.Concurrent;
-#if NETFRAMEWORK
-using System.Net.Http;
-#endif
-
 namespace OpenTelemetry.Instrumentation.Http.Implementation;
 
 /// <summary>
 /// A collection of helper methods to be used when building Http activities.
 /// </summary>
 internal static class HttpTagHelper
 {
-    private static readonly ConcurrentDictionary<string, string> MethodOperationNameCache = new();
-    private static readonly ConcurrentDictionary<HttpMethod, string> HttpMethodOperationNameCache = new();
-    private static readonly ConcurrentDictionary<HttpMethod, string> HttpMethodNameCache = new();
-
-    private static readonly Func<string, string> ConvertMethodToOperationNameRef = ConvertMethodToOperationName;
-    private static readonly Func<HttpMethod, string> ConvertHttpMethodToOperationNameRef = ConvertHttpMethodToOperationName;
-    private static readonly Func<HttpMethod, string> ConvertHttpMethodToNameRef = ConvertHttpMethodToName;
-
-    /// <summary>
-    /// Gets the OpenTelemetry standard name for an activity based on its Http method.
-    /// </summary>
-    /// <param name="method">Http method.</param>
-    /// <returns>Activity name.</returns>
-    public static string GetOperationNameForHttpMethod(string method) => MethodOperationNameCache.GetOrAdd(method, ConvertMethodToOperationNameRef);
-
-    /// <summary>
-    /// Gets the OpenTelemetry standard operation name for a span based on its <see cref="HttpMethod"/>.
-    /// </summary>
-    /// <param name="method"><see cref="HttpMethod"/>.</param>
-    /// <returns>Span operation name.</returns>
-    public static string GetOperationNameForHttpMethod(HttpMethod method) => HttpMethodOperationNameCache.GetOrAdd(method, ConvertHttpMethodToOperationNameRef);
-
-    /// <summary>
-    /// Gets the OpenTelemetry standard method name for a span based on its <see cref="HttpMethod"/>.
-    /// </summary>
-    /// <param name="method"><see cref="HttpMethod"/>.</param>
-    /// <returns>Span method name.</returns>
-    public static string GetNameForHttpMethod(HttpMethod method) => HttpMethodNameCache.GetOrAdd(method, ConvertHttpMethodToNameRef);
-
     /// <summary>
     /// Gets the OpenTelemetry standard uri tag value for a span based on its request <see cref="Uri"/>.
     /// </summary>
@@ -65,10 +31,4 @@ public static string GetUriTagValueFromRequestUri(Uri uri)
         (3, 0) => "3",
         _ => httpVersion.ToString(),
     };
-
-    private static string ConvertMethodToOperationName(string method) => $"HTTP {method}";
-
-    private static string ConvertHttpMethodToOperationName(HttpMethod method) => $"HTTP {method}";
-
-    private static string ConvertHttpMethodToName(HttpMethod method) => method.ToString();
 }