remove the X at the top of the regression testing window. It gives us problems

EduNetworkBuilder/ListBoxWindow.cs

@@ -162,6 +162,8 @@ namespace EduNetworkBuilder
                 newCB = AddCheckBox(count++, Untested);
                 newCB.Checked = true; //start with this one checked
 
+                this.ControlBox = false; //remove the X at the top corner that gives us problems
+
                 panelCheckboxes.ResumeLayout();
                 btnOK.Text = NB.Translate("_Load");
                 btnAdd.Text = NB.Translate("_Cancel");