Remove logic that some accessible objects cannot have children

There are many places where this doesn't make sense (a button in a
search field, a line in a list represented as button with a child button
to remove the list item...).

Change-Id: Iab1d411adda696a01b1dcfdebb0a250066d6a7c2
Reviewed-by: Jan Arve Sæther <jan-arve.saether@theqtcompany.com>

src/quick/accessible/qaccessiblequickitem.cpp

@@ -170,16 +170,6 @@ QList<QQuickItem *> accessibleUnignoredChildren(QQuickItem *item, bool paintOrde
 
 QList<QQuickItem *> QAccessibleQuickItem::childItems() const
 {
-    if (    role() == QAccessible::Button ||
-            role() == QAccessible::CheckBox ||
-            role() == QAccessible::RadioButton ||
-            role() == QAccessible::SpinBox ||
-            role() == QAccessible::EditableText ||
-            role() == QAccessible::Slider ||
-            role() == QAccessible::PageTab ||
-            role() == QAccessible::ProgressBar)
-        return QList<QQuickItem *>();
-
     return accessibleUnignoredChildren(item());
 }