Squish: Remove outdated note about Qt4 from README
Squish: Remove outdated note about Qt4 from README

Change-Id: I0638a56d6bd833a6a7a97f7ebda7a99ab20e255d
Reviewed-by: Christian Stenger <accbb51712d7b9c4fb108439d01e716148e5f9e6@theqtcompany.com>

danimo/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,danimo/qt-creator,danimo/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,xianian/qt-creator,Distrotech/qtcreator,danimo/qt-creator,danimo/qt-creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,xianian/qt-creator,kuba1/qtcreator,kuba1/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,danimo/qt-creator,kuba1/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,kuba1/qtcreator,xianian/qt-creator,xianian/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,Distrotech/qtcreator,kuba1/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator