Removed redundant ExpressionUtil::GetTypeName and switched to ExpressionTypeToString
Removed redundant ExpressionUtil::GetTypeName and switched to ExpressionTypeToString


Former-commit-id: 8d3ae8160d892a6c20d68b019e16a38611d34f70
vittvolt/peloton,wangziqi2016/peloton,jessesleeping/iso_peloton,prashasthip/peloton,prashasthip/peloton,seojungmin/peloton,yingjunwu/peloton,malin1993ml/peloton,vittvolt/15721-peloton,PauloAmora/peloton,prashasthip/peloton,malin1993ml/peloton,vittvolt/15721-peloton,ShuxinLin/peloton,seojungmin/peloton,vittvolt/15721-peloton,PauloAmora/peloton,cmu-db/peloton,AllisonWang/peloton,phisiart/peloton-p3,wangziqi2016/peloton,apavlo/peloton,apavlo/peloton,wangziqi2016/peloton,yingjunwu/peloton,haojin2/peloton,apavlo/peloton,phisiart/peloton-p3,seojungmin/peloton,malin1993ml/peloton,vittvolt/peloton,seojungmin/peloton,phisiart/peloton-p3,vittvolt/15721-peloton,prashasthip/peloton,cmu-db/peloton,jessesleeping/iso_peloton,malin1993ml/peloton,vittvolt/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,eric-haibin-lin/peloton-1,haojin2/peloton,ShuxinLin/peloton,AllisonWang/peloton,prashasthip/peloton,seojungmin/peloton,wangziqi2016/peloton,apavlo/peloton,yingjunwu/peloton,AngLi-Leon/peloton,AllisonWang/peloton,eric-haibin-lin/peloton-1,yingjunwu/peloton,haojin2/peloton,vittvolt/15721-peloton,jessesleeping/iso_peloton,seojungmin/peloton,malin1993ml/peloton,AngLi-Leon/peloton,cmu-db/peloton,ShuxinLin/peloton,cmu-db/peloton,AngLi-Leon/peloton,eric-haibin-lin/peloton-1,PauloAmora/peloton,PauloAmora/peloton,yingjunwu/peloton,PauloAmora/peloton,malin1993ml/peloton,wangziqi2016/peloton,eric-haibin-lin/peloton-1,AllisonWang/peloton,PauloAmora/peloton,ShuxinLin/peloton,eric-haibin-lin/peloton-1,prashasthip/peloton,jessesleeping/iso_peloton,wangziqi2016/peloton,haojin2/peloton,phisiart/peloton-p3,cmu-db/peloton,haojin2/peloton,vittvolt/15721-peloton,haojin2/peloton,vittvolt/peloton,phisiart/peloton-p3,AngLi-Leon/peloton,ShuxinLin/peloton,jessesleeping/iso_peloton,phisiart/peloton-p3,vittvolt/peloton,jessesleeping/iso_peloton,jessesleeping/iso_peloton,yingjunwu/peloton,apavlo/peloton,eric-haibin-lin/peloton-1,cmu-db/peloton,ShuxinLin/peloton,AllisonWang/peloton,AllisonWang/peloton,vittvolt/peloton,apavlo/peloton