diff --git a/osu.Game/IO/Legacy/SerializationReader.cs b/osu.Game/IO/Legacy/SerializationReader.cs
index 64e25d5add..5423485c95 100644
--- a/osu.Game/IO/Legacy/SerializationReader.cs
+++ b/osu.Game/IO/Legacy/SerializationReader.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Runtime.Serialization;
 using System.Text;
 
 namespace osu.Game.IO.Legacy
@@ -23,15 +22,6 @@ public SerializationReader(Stream s)
 
         public int RemainingBytes => (int)(stream.Length - stream.Position);
 
-        /// <summary> Static method to take a SerializationInfo object (an input to an ISerializable constructor)
-        /// and produce a SerializationReader from which serialized objects can be read </summary>.
-        public static SerializationReader GetReader(SerializationInfo info)
-        {
-            byte[] byteArray = (byte[])info.GetValue("X", typeof(byte[]));
-            MemoryStream ms = new MemoryStream(byteArray);
-            return new SerializationReader(ms);
-        }
-
         /// <summary> Reads a string from the buffer.  Overrides the base implementation so it can cope with nulls. </summary>
         public override string ReadString()
         {
diff --git a/osu.Game/IO/Legacy/SerializationWriter.cs b/osu.Game/IO/Legacy/SerializationWriter.cs
index 6dfb21e5bd..c9fff05bcc 100644
--- a/osu.Game/IO/Legacy/SerializationWriter.cs
+++ b/osu.Game/IO/Legacy/SerializationWriter.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Runtime.Serialization;
 using System.Text;
 
 // ReSharper disable ConditionIsAlwaysTrueOrFalse (we're allowing nulls to be passed to the writer where the underlying class doesn't).
@@ -221,13 +220,6 @@ public void WriteObject(object obj)
             } // if obj==null
         } // WriteObject
 
-        /// <summary> Adds the SerializationWriter buffer to the SerializationInfo at the end of GetObjectData(). </summary>
-        public void AddToInfo(SerializationInfo info)
-        {
-            byte[] b = ((MemoryStream)BaseStream).ToArray();
-            info.AddValue("X", b, typeof(byte[]));
-        }
-
         public void WriteRawBytes(byte[] b)
         {
             base.Write(b);