Get rid of QDeclarativeUtils

Get rid of QDeclarativeUtils

All the QChar methods needed by QtDeclarative have now
been optimized to achieve at least as good performance
as the QDeclarativeUtils versions.

Change-Id: I5b8dd58f9b597f716b53563d07d39d894c5dd666
Reviewed-on: http://codereview.qt-project.org/5059
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>