[pom] Update impsort maven plugin to 1.2.0 and turn on removal of unused imports
[pom] Update impsort maven plugin to 1.2.0 and turn on removal of unused imports

dblock/waffle,dblock/waffle,Waffle/waffle,dblock/waffle,hazendaz/waffle,dblock/waffle,hazendaz/waffle,Waffle/waffle,hazendaz/waffle,Waffle/waffle