Fix ctkColorDialogTest2 time out
Fix ctkColorDialogTest2 time out

ctkColorDialog::getColor() already pops up the dialog, there is no need to
exec the app. It would otherwise hang there as no window is shown.

ddao/CTK,151706061/CTK,Heather/CTK,SINTEFMedtek/CTK,AndreasFetzer/CTK,jcfr/CTK,SINTEFMedtek/CTK,laurennlam/CTK,ddao/CTK,finetjul/CTK,Sardge/CTK,laurennlam/CTK,naucoin/CTK,mehrtash/CTK,jcfr/CTK,AndreasFetzer/CTK,jcfr/CTK,rkhlebnikov/CTK,vovythevov/CTK,vovythevov/CTK,commontk/CTK,fedorov/CTK,sankhesh/CTK,naucoin/CTK,espakm/CTK,rkhlebnikov/CTK,msmolens/CTK,Heather/CTK,msmolens/CTK,espakm/CTK,SINTEFMedtek/CTK,CJGoch/CTK,commontk/CTK,danielknorr/CTK,rkhlebnikov/CTK,vovythevov/CTK,SINTEFMedtek/CTK,finetjul/CTK,danielknorr/CTK,fedorov/CTK,sankhesh/CTK,pieper/CTK,sankhesh/CTK,mehrtash/CTK,SINTEFMedtek/CTK,pieper/CTK,vovythevov/CTK,151706061/CTK,CJGoch/CTK,Heather/CTK,ddao/CTK,sankhesh/CTK,finetjul/CTK,espakm/CTK,msmolens/CTK,msmolens/CTK,CJGoch/CTK,jcfr/CTK,fedorov/CTK,laurennlam/CTK,151706061/CTK,laurennlam/CTK,commontk/CTK,naucoin/CTK,CJGoch/CTK,Sardge/CTK,AndreasFetzer/CTK,commontk/CTK,151706061/CTK,mehrtash/CTK,fedorov/CTK,danielknorr/CTK,naucoin/CTK,CJGoch/CTK,AndreasFetzer/CTK,finetjul/CTK,Sardge/CTK,151706061/CTK,Sardge/CTK,Heather/CTK,mehrtash/CTK,pieper/CTK,espakm/CTK,danielknorr/CTK,ddao/CTK,pieper/CTK,rkhlebnikov/CTK,jcfr/CTK