fix: reverted the changes in DirectorWrapper.cs

Author: oni-shiro

src/TestableIO.System.IO.Abstractions.Wrappers/DirectoryWrapper.cs

@@ -215,17 +215,6 @@ public override IDirectoryInfo GetParent(string path)
     /// <inheritdoc />
     public override void Move(string sourceDirName, string destDirName)
     {
-        var fullSourcePath = Path.GetFullPath(sourceDirName);
-        var fullDestPath = Path.GetFullPath(destDirName);
-
-        if (fullSourcePath.Equals(fullDestPath))
-        {
-            throw new IOException("Source and destination path must be different.");
-        }
-        else if (Directory.Exists(fullDestPath) || File.Exists(fullDestPath))
-        {
-            throw new IOException("Destination path already exists.");
-        }
         Directory.Move(sourceDirName, destDirName);
     }