[NbtkClipboard] fix whitespace
[NbtkClipboard] fix whitespace

Remove trailing spaces and tab characters

clutter-project/mx,clutter-project/mx,jonnylamb/mx,pwithnall/mx,clutter-project/mx,pwithnall/mx,jonnylamb/mx,jonnylamb/mx,jonnylamb/mx,pwithnall/mx,pwithnall/mx,clutter-project/mx