QQuickTextInput: don't ifdef out properties

Take out the implementation body instead. These conditional properties
are causing trouble for controls (invalid alias location).

Change-Id: I055e149a4fe2d4d5d0c62d21e5f5368e9973c512
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
QQuickTextEdit: don't ifdef out properties

Take out the implementation body instead. These conditional properties
are causing trouble for controls (invalid alias location).

Change-Id: I509c6a156b8f6c6fa12488bfc5e301f60346f8a5
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>