Do not check required inputs on startup

Elwig/Windows/AdministrationWindow.cs

@@ -76,7 +76,6 @@ namespace Elwig.Windows {
                 cb.SelectionChanged += ComboBox_SelectionChanged;
             foreach (var cb in CheckComboBoxInputs)
                 cb.ItemSelectionChanged += ComboBox_SelectionChanged;
-            ValidateRequiredInputs();
         }
 
         private void OnClosing(object? sender, CancelEventArgs evt) {