Remove duplicate gtf_to_genepred.
Remove duplicate gtf_to_genepred.

joemphilips/cloudbiolinux,chapmanb/cloudbiolinux,chapmanb/cloudbiolinux,chapmanb/cloudbiolinux,joemphilips/cloudbiolinux,joemphilips/cloudbiolinux,rchekaluk/cloudbiolinux,rchekaluk/cloudbiolinux,rchekaluk/cloudbiolinux,joemphilips/cloudbiolinux,chapmanb/cloudbiolinux,rchekaluk/cloudbiolinux