removed duplicate arrayexpress datasource
removed duplicate arrayexpress datasource



Former-commit-id: 288adc45cc0b4def11a1deb9338ff8401ad53c8e
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine