Remove explicit return type from internal functions
Remove explicit return type from internal functions

qmihara/kotterknife,qmihara/kotterknife,josegonzalez/kotterknife,josegonzalez/kotterknife,JakeWharton/kotterknife,JakeWharton/kotterknife,MaTriXy/kotterknife,MaTriXy/kotterknife