Make Encoding a private field only for IReadOnlyFilesystem implementors.

Aaru.Filesystems/Locus/Locus.cs

@@ -29,7 +29,6 @@
 // Commit count
 
 using System;
-using System.Text;
 using Aaru.CommonTypes.Interfaces;
 using commitcnt_t = System.Int32;
 
@@ -60,8 +59,6 @@ namespace Aaru.Filesystems;
 /// <summary>Implements detection of the Locus filesystem</summary>
 public sealed partial class Locus : IFilesystem
 {
-    /// <inheritdoc />
-    public Encoding Encoding { get; private set; }
     /// <inheritdoc />
     public string Name => Localization.Locus_Name;
     /// <inheritdoc />