rm obsolete codes

Author: doghappy

src/SocketIOClient.Newtonsoft.Json/NewtonsoftJsonSerializer.cs

@@ -39,28 +39,18 @@ public T Deserialize<T>(string json, IList<byte[]> bytes)
 
         private JsonSerializerSettings GetOptions()
         {
-            JsonSerializerSettings options;
+            JsonSerializerSettings options = null;
             if (OptionsProvider != null)
             {
                 options = OptionsProvider();
             }
-            else
-            {
-                options = CreateOptions();
-            }
             if (options == null)
             {
                 options = new JsonSerializerSettings();
             }
             return options;
         }
 
-        [Obsolete("Use Options instead.")]
-        public virtual JsonSerializerSettings CreateOptions()
-        {
-            return new JsonSerializerSettings();
-        }
-
         public Func<JsonSerializerSettings> OptionsProvider { get; set; }
     }
 }

src/SocketIOClient/JsonSerializer/SystemTextJsonSerializer.cs

@@ -36,28 +36,18 @@ public T Deserialize<T>(string json, IList<byte[]> bytes)
 
         private JsonSerializerOptions GetOptions()
         {
-            JsonSerializerOptions options;
+            JsonSerializerOptions options = null;
             if (OptionsProvider != null)
             {
                 options = OptionsProvider();
             }
-            else
-            {
-                options = CreateOptions();
-            }
             if (options == null)
             {
                 options = new JsonSerializerOptions();
             }
             return options;
         }
 
-        [Obsolete("Use OptionsProvider instead.")]
-        public virtual JsonSerializerOptions CreateOptions()
-        {
-            return new JsonSerializerOptions();
-        }
-
         public Func<JsonSerializerOptions> OptionsProvider { get; set; }
     }
 }