fix trailing comma for 1.8.7 compat
fix trailing comma for 1.8.7 compat

* remove unused reference

fog/fog-aws,esthervillars/fog-aws,puneetloya/fog-aws,nilroy/fog-aws,fog/fog-aws,esthervillars/fog-aws,fog/fog-aws,puneetloya/fog-aws,engineyard/fog-aws,engineyard/fog-aws,nilroy/fog-aws