Replace ToRequestParameters implementations.

Octokit/Models/Request/RepositoryIssueRequest.cs

@@ -1,7 +1,4 @@
-using System.Collections.Generic;
-using System.Diagnostics;
-
-namespace Octokit
+namespace Octokit
 {
     public class RepositoryIssueRequest : IssueRequest
     {
@@ -10,22 +7,5 @@ namespace Octokit
         /// Use the milestone number for a specific milestone. Use the value "none" for issues with any milestones.
         /// </summary>
         public string Milestone { get; set; }
-
-        /// <summary>
-        /// Returns a dictionary of query string parameters that represent this request. Only values that
-        /// do not have default values are in the dictionary. If everything is default, this returns an
-        /// empty dictionary.
-        /// </summary>
-        /// <returns></returns>
-        public override IDictionary<string, string> ToParametersDictionary()
-        {
-            var dictionary = base.ToParametersDictionary();
-            Debug.Assert(dictionary != null, "Base implementation is wrong. Dictionary should never be null");
-            if (!Milestone.IsBlank())
-            {
-                dictionary.Add("milestone", Milestone);
-            }
-            return dictionary;
-        }
     }
-}
+}