Remove unreferenced/old code

Author: lzybkr

PSReadLine/ConsoleBufferBuilder.cs

@@ -30,10 +30,6 @@ CHAR_INFO NewCharInfo(char c)
                 ForegroundColor = Console.ForegroundColor
             };
         }
-        public void Append(char c)
-        {
-            buffer.Add(NewCharInfo(c));
-        }
 
         public void Append(string s)
         {

PSReadLine/ReadLine.cs

@@ -38,8 +38,6 @@ public partial class PSConsoleReadLine : IPSConsoleReadLineMockableMethods
         private ManualResetEvent _closingWaitHandle;
         private WaitHandle[] _threadProcWaitHandles;
         private WaitHandle[] _requestKeyWaitHandles;
-        private bool _captureKeys;
-        private readonly Queue<ConsoleKeyInfo> _savedKeys;
         private uint _prePSReadlineConsoleMode;
 
         private readonly StringBuilder _buffer;
@@ -210,10 +208,6 @@ private static ConsoleKeyInfo ReadKey()
                 throw new OperationCanceledException();
             }
             var key = _singleton._queuedKeys.Dequeue();
-            if (_singleton._captureKeys)
-            {
-                _singleton._savedKeys.Enqueue(key);
-            }
             return key;
         }
 
@@ -491,9 +485,6 @@ private PSConsoleReadLine()
         {
             _mockableMethods = this;
 
-            _captureKeys = false;
-            _savedKeys = new Queue<ConsoleKeyInfo>();
-
             SetDefaultWindowsBindings();
 
             _buffer = new StringBuilder(8 * 1024);