Remove unused PackageStore.get_treeinfo()
Remove unused PackageStore.get_treeinfo()

This should've been removed in 95b806aaaec09243f8d6d40eb5670c520cb7af34.

vishnu2kmohan/dcos,BenWhitehead/dcos,dcos/dcos,mellenburg/dcos,xinxian0458/dcos,dcos/dcos,surdy/dcos,darkonie/dcos,surdy/dcos,surdy/dcos,vishnu2kmohan/dcos,dcos/dcos,amitaekbote/dcos,mnaboka/dcos,jeid64/dcos,xinxian0458/dcos,xinxian0458/dcos,GoelDeepak/dcos,amitaekbote/dcos,mesosphere-mergebot/mergebot-test-dcos,branden/dcos,mellenburg/dcos,BenWhitehead/dcos,branden/dcos,darkonie/dcos,GoelDeepak/dcos,mesosphere-mergebot/dcos,lingmann/dcos,mesosphere-mergebot/mergebot-test-dcos,surdy/dcos,kensipe/dcos,asridharan/dcos,jeid64/dcos,mnaboka/dcos,amitaekbote/dcos,mnaboka/dcos,amitaekbote/dcos,lingmann/dcos,vishnu2kmohan/dcos,asridharan/dcos,mellenburg/dcos,BenWhitehead/dcos,darkonie/dcos,mesosphere-mergebot/dcos,mellenburg/dcos,mnaboka/dcos,dcos/dcos,vishnu2kmohan/dcos,GoelDeepak/dcos,kensipe/dcos,xinxian0458/dcos,kensipe/dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/dcos,branden/dcos,jeid64/dcos,BenWhitehead/dcos,asridharan/dcos,branden/dcos,darkonie/dcos,darkonie/dcos,lingmann/dcos,mesosphere-mergebot/mergebot-test-dcos,GoelDeepak/dcos,asridharan/dcos,mnaboka/dcos,mesosphere-mergebot/dcos,dcos/dcos,jeid64/dcos,kensipe/dcos,lingmann/dcos