remove unused and incorrect make_trivial_sequence()
remove unused and incorrect make_trivial_sequence()

--HG--
extra : convert_revision : svn%3A83215879-3e5a-4751-8c9d-778f44bb06a5/trunk%40466

xiongzhanblake/thrust,GrimDerp/thrust,thrust/thrust,thvasilo/thrust,xiongzhanblake/thrust,zeryx/thrust,thrust/thrust,xiongzhanblake/thrust_src,Ricardo666666/thrust,andrewcorrigan/thrust-multi-permutation-iterator,jaredhoberock/thrust,arnabgho/thrust,zeryx/thrust,zhenglaizhang/thrust,thrust/thrust,raygit/thrust,xiongzhanblake/thrust_src,jaredhoberock/thrust,marksantos/thrust,thvasilo/thrust,jaredhoberock/thrust,sdalton1/thrust,jaredhoberock/thrust,GrimDerp/thrust,egaburov/thrust,sdalton1/thrust,mohamed-ali/thrust,arnabgho/thrust,andrewcorrigan/thrust-multi-permutation-iterator,zhenglaizhang/thrust,xiongzhanblake/thrust_src,thrust/thrust,marksantos/thrust,zhenglaizhang/thrust,marksantos/thrust,raygit/thrust,egaburov/thrust,mohamed-ali/thrust,Ricardo666666/thrust,dachziegel/thrust,dachziegel/thrust,GrimDerp/thrust,thvasilo/thrust,egaburov/thrust,dachziegel/thrust,mohamed-ali/thrust,sarvex/thrust,thrust/thrust,zeryx/thrust,raygit/thrust,xiongzhanblake/thrust,sarvex/thrust,arnabgho/thrust,jaredhoberock/thrust,sarvex/thrust,andrewcorrigan/thrust-multi-permutation-iterator,sdalton1/thrust,Ricardo666666/thrust