Fixes #1267. Allows NetDriver run Terminal.Gui. (#1268)

* Fixes #1267. Allows NetDriver run Terminal.Gui.

* Removing instead of commenting.

Terminal.Gui/Core/Application.cs

@@ -550,7 +550,6 @@ namespace Terminal.Gui {
 			Driver?.End ();
 			Driver = null;
 			Iteration = null;
-			UseSystemConsole = false;
 			RootMouseEvent = null;
 			Resized = null;
 			_initialized = false;

UnitTests/ApplicationTests.cs

@@ -47,7 +47,6 @@ namespace Terminal.Gui.Core {
 			Assert.False (Application.AlwaysSetPosition);
 			Assert.Null (Application.MainLoop);
 			Assert.Null (Application.Iteration);
-			Assert.False (Application.UseSystemConsole);
 			Assert.Null (Application.RootMouseEvent);
 			Assert.Null (Application.Resized);
 		}
@@ -61,7 +60,6 @@ namespace Terminal.Gui.Core {
 			Assert.False (Application.AlwaysSetPosition);
 			Assert.NotNull (Application.MainLoop);
 			Assert.Null (Application.Iteration);
-			Assert.False (Application.UseSystemConsole);
 			Assert.Null (Application.RootMouseEvent);
 			Assert.Null (Application.Resized);
 		}