Remove some dead code from tree storage (#313)
Remove some dead code from tree storage (#313)


gdbelvin/trillian,codingllama/trillian,Martin2112/trillian,daviddrysdale/trillian,google/trillian,RJPercival/trillian,Martin2112/trillian,gdbelvin/trillian,daviddrysdale/trillian,gtank/trillian,RJPercival/trillian,AlCutter/trillian,gtank/trillian,gdbelvin/trillian,AlCutter/trillian,daviddrysdale/trillian,codingllama/trillian,google/trillian,Martin2112/trillian