Pos & Dim -> abstract

Terminal.Gui/View/Layout/Dim.cs

@@ -142,7 +142,7 @@ public enum Dimension
 ///     </para>
 ///     <para></para>
 /// </remarks>
-public class Dim
+public abstract class Dim
 {
     #region static Dim creation methods
 

Terminal.Gui/View/Layout/Pos.cs

@@ -148,7 +148,7 @@ public enum Side
 ///         </list>
 ///     </para>
 /// </remarks>
-public class Pos
+public abstract class Pos
 {
     #region static Pos creation methods
 

UnitTests/View/Layout/Dim.Tests.cs

@@ -308,13 +308,6 @@ public class DimTests
         view.Dispose ();
     }
 
-    [Fact]
-    public void New_Works ()
-    {
-        var dim = new Dim ();
-        Assert.Equal ("Terminal.Gui.Dim", dim.ToString ());
-    }
-
     // TODO: This actually a SetRelativeLayout/LayoutSubViews test and should be moved
     // TODO: A new test that calls SetRelativeLayout directly is needed.
     [Fact]

UnitTests/View/Layout/Pos.Tests.cs

@@ -300,13 +300,6 @@ public class PosTests ()
         }
     }
 
-    [Fact]
-    public void New_Works ()
-    {
-        var pos = new Pos ();
-        Assert.Equal ("Terminal.Gui.Pos", pos.ToString ());
-    }
-
     [Fact]
     public void PosPercent_Equal ()
     {