Cleaned up bwtree header file
Cleaned up bwtree header file


Former-commit-id: 97629f7b063c0f6338be40bb30045412c03f0d08
wangziqi2016/peloton,haojin2/peloton,ShuxinLin/peloton,PauloAmora/peloton,ShuxinLin/peloton,eric-haibin-lin/peloton-1,eric-haibin-lin/peloton-1,haojin2/peloton,AngLi-Leon/peloton,haojin2/peloton,seojungmin/peloton,AllisonWang/peloton,vittvolt/15721-peloton,phisiart/peloton-p3,malin1993ml/peloton,eric-haibin-lin/peloton-1,vittvolt/15721-peloton,malin1993ml/peloton,jessesleeping/iso_peloton,jessesleeping/iso_peloton,PauloAmora/peloton,cmu-db/peloton,cmu-db/peloton,malin1993ml/peloton,jessesleeping/iso_peloton,yingjunwu/peloton,prashasthip/peloton,seojungmin/peloton,jessesleeping/iso_peloton,seojungmin/peloton,wangziqi2016/peloton,vittvolt/peloton,prashasthip/peloton,AngLi-Leon/peloton,ShuxinLin/peloton,seojungmin/peloton,apavlo/peloton,prashasthip/peloton,vittvolt/peloton,malin1993ml/peloton,ShuxinLin/peloton,phisiart/peloton-p3,AngLi-Leon/peloton,vittvolt/15721-peloton,apavlo/peloton,cmu-db/peloton,yingjunwu/peloton,AngLi-Leon/peloton,PauloAmora/peloton,vittvolt/15721-peloton,eric-haibin-lin/peloton-1,phisiart/peloton-p3,jessesleeping/iso_peloton,prashasthip/peloton,vittvolt/peloton,vittvolt/15721-peloton,apavlo/peloton,wangziqi2016/peloton,prashasthip/peloton,ShuxinLin/peloton,jessesleeping/iso_peloton,haojin2/peloton,prashasthip/peloton,vittvolt/15721-peloton,PauloAmora/peloton,yingjunwu/peloton,haojin2/peloton,vittvolt/peloton,vittvolt/peloton,AngLi-Leon/peloton,cmu-db/peloton,apavlo/peloton,wangziqi2016/peloton,ShuxinLin/peloton,phisiart/peloton-p3,yingjunwu/peloton,phisiart/peloton-p3,PauloAmora/peloton,AllisonWang/peloton,phisiart/peloton-p3,jessesleeping/iso_peloton,wangziqi2016/peloton,cmu-db/peloton,AllisonWang/peloton,AllisonWang/peloton,apavlo/peloton,seojungmin/peloton,malin1993ml/peloton,AllisonWang/peloton,malin1993ml/peloton,seojungmin/peloton,eric-haibin-lin/peloton-1,vittvolt/peloton,apavlo/peloton,cmu-db/peloton,yingjunwu/peloton,eric-haibin-lin/peloton-1,yingjunwu/peloton,AllisonWang/peloton,PauloAmora/peloton,wangziqi2016/peloton,AngLi-Leon/peloton,haojin2/peloton