Remove current selection when changing tool mode from text/note tool mode. 
Remove current selection when changing tool mode from text/note tool mode. 
WoLpH/skim,ycaihua/skim-app,ycaihua/skim-app,ycaihua/skim-app,ycaihua/skim-app,ycaihua/skim-app,WoLpH/skim,WoLpH/skim,WoLpH/skim,WoLpH/skim