[DatItem, Machine] Remove direct usage of Machine from DatItem

SabreTools.Library/Dats/Machine.cs

@@ -151,44 +151,5 @@ namespace SabreTools.Library.Dats
 		}
 
 		#endregion
-
-		#region Property updaters
-
-		public void AppendName(string append)
-		{
-			Name += append;
-		}
-
-		public void AppendDescription(string append)
-		{
-			Description += append;
-		}
-
-		public void UpdateName(string update)
-		{
-			Name = update;
-		}
-
-		public void UpdateDescription(string update)
-		{
-			Description = update;
-		}
-
-		public void UpdateCloneOf(string update)
-		{
-			CloneOf = update;
-		}
-
-		public void UpdateRomOf(string update)
-		{
-			RomOf = update;
-		}
-
-		public void UpdateSampleOf(string update)
-		{
-			SampleOf = update;
-		}
-
-		#endregion
 	}
 }