QmlDesigner: Remove unused qmldir file

This is a leftover from QtQuick 1.

Change-Id: I1540924f11fd3c316b68b7a04eb1786afc6bfec1
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

share/qtcreator/qmldesigner/propertyeditor/HelperWidgets/qmldir

@@ -1,48 +0,0 @@
-AlignmentHorizontalButtons 1.0 AlignmentHorizontalButtons.qml
-AlignmentVerticalButtons 1.0 AlignmentVerticalButtons.qml
-AnchorBox 1.0 AnchorBox.qml
-AnchorButtons 1.0 AnchorButtons.qml
-CheckBox 1.0 CheckBox.qml
-ColorGroupBox 1.0 ColorGroupBox.qml
-ColorLabel 1.0 ColorLabel.qml
-ColorLineEdit 1.0 ColorLineEdit.qml
-ColorScheme 1.0 ColorScheme.qml
-ColorTypeButtons 1.0 ColorTypeButtons.qml
-ComboBox 1.0 ComboBox.qml
-DoubleSpinBox 1.0 DoubleSpinBox.qml
-DoubleSpinBoxAlternate 1.0 DoubleSpinBoxAlternate.qml
-ExpressionEditor 1.0 ExpressionEditor.qml
-Extended 1.0 Extended.qml
-ExtendedFunctionButton 1.0 ExtendedFunctionButton.qml
-ExtendedPane 1.0 ExtendedPane.qml
-ExtendedSwitches 1.0 ExtendedSwitches.qml
-FlagedButton 1.0 FlagedButton.qml
-FontComboBox 1.0 FontComboBox.qml
-FontGroupBox 1.0 FontGroupBox.qml
-FontStyleButtons 1.0 FontStyleButtons.qml
-Geometry 1.0 Geometry.qml
-GroupBox 1.0 GroupBox.qml
-GroupBoxOption 1.0 GroupBoxOption.qml
-HorizontalLayout 1.0 HorizontalLayout.qml
-HorizontalWhiteLine 1.0 HorizontalWhiteLine.qml
-IntEditor 1.0 IntEditor.qml
-Label 1.0 Label.qml
-Layout 1.0 Layout.qml
-LayoutPane 1.0 LayoutPane.qml
-LineEdit 1.0 LineEdit.qml
-Modifiers 1.0 Modifiers.qml
-PlaceHolder 1.0 PlaceHolder.qml
-PropertyFrame 1.0 PropertyFrame.qml
-ScrollArea 1.0 ScrollArea.qml
-SliderWidget 1.0 SliderWidget.qml
-SpinBox 1.0 SpinBox.qml
-StandardTextColorGroupBox 1.0 StandardTextColorGroupBox.qml
-StandardTextGroupBox 1.0 StandardTextGroupBox.qml
-Switches 1.0 Switches.qml
-TextEditor 1.0 TextEditor.qml
-TextInputGroupBox 1.0 TextInputGroupBox.qml
-Transformation 1.0 Transformation.qml
-Type 1.0 Type.qml
-VerticalLayout 1.0 VerticalLayout.qml
-Visibility 1.0 Visibility.qml
-UrlEdit 1.0 UrlEdit.qml