Make Encoding a private field only for IReadOnlyFilesystem implementors.

Interfaces/IFilesystem.cs

@@ -45,8 +45,6 @@ namespace Aaru.CommonTypes.Interfaces;
 /// <summary>Interface to implement filesystem plugins.</summary>
 public interface IFilesystem
 {
-    /// <summary>Defines the encoding used to interpret strings in the filesystem</summary>
-    Encoding Encoding { get; }
     /// <summary>Plugin name (translatable).</summary>
     string Name { get; }
     /// <summary>Plugin UUID.</summary>