relax rule: rely on jshint's no use before define rule
relax rule: rely on jshint's no use before define rule

eslint's is overly strict and has false positives, jshint's is already
enabled and works fine.

icemobilelab/icemobile-standard,LinusU/standard-engine,TheLady/standard,timbl/standard,JedWatson/happiness,bengl/standard,jden/jsw,salespreso/standard,ricardofbarros/standard,kublaj/standard,Flet/standard-engine,yudiutomo/standard,SimenB/standard,yamafaktory/standard,Eruant/standard,maxogden/standard,jasonpincin/standard,standard/standard,driftyco/standard,Flet/standard,xjamundx/standard,keis/standard,bradparks/standard,stevemao/standard,watson/standard-engine,tk120404/standard,tjwudi/standard,LinusU/standard,febeling/standard,yoshuawuyts/standard,ricardofbarros/standard-engine,feross/standard,pombredanne/standard-1,koddsson/standard,beni55/standard,medseek-engineering/standard,mightyiam/standard,mnquintana/standard,JedWatson/happiness,SimenB/standard,cesarandreu/standard,matthieuprat/standard,LinusU/standard,feross/standard,Holowaychitos/standard,standard/standard,uber/standard,leecade/standard,reggi/standard,mattdesl/standard,John-Lin/standard