Accessibility: don't bind to the text property.

The rationale is that when editing a big document, the getter for the
text property is potentially costly. We most likely want a more
sensible interface for this anyway.

Change-Id: I1dd7f5b990295cd8a240092dec6cfa0deb64f12b
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>

src/controls/TextArea.qml

@@ -591,9 +591,6 @@ ScrollView {
 
     Accessible.role: Accessible.EditableText
 
-    // FIXME: probably implement text interface
-    Accessible.name: text
-
     TextEdit {
         id: edit
         focus: true