Comment out GCC 4.9 builds
Comment out GCC 4.9 builds

malin1993ml/peloton,AllisonWang/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,malin1993ml/peloton,apavlo/peloton,yingjunwu/peloton,haojin2/peloton,seojungmin/peloton,vittvolt/peloton,AllisonWang/peloton,vittvolt/peloton,prashasthip/peloton,cmu-db/peloton,malin1993ml/peloton,AllisonWang/peloton,vittvolt/peloton,apavlo/peloton,yingjunwu/peloton,PauloAmora/peloton,AngLi-Leon/peloton,seojungmin/peloton,yingjunwu/peloton,seojungmin/peloton,seojungmin/peloton,apavlo/peloton,malin1993ml/peloton,ShuxinLin/peloton,haojin2/peloton,ShuxinLin/peloton,PauloAmora/peloton,yingjunwu/peloton,cmu-db/peloton,AllisonWang/peloton,prashasthip/peloton,apavlo/peloton,ShuxinLin/peloton,AngLi-Leon/peloton,vittvolt/peloton,haojin2/peloton,cmu-db/peloton,PauloAmora/peloton,cmu-db/peloton,haojin2/peloton,AngLi-Leon/peloton,prashasthip/peloton,cmu-db/peloton,prashasthip/peloton,malin1993ml/peloton,malin1993ml/peloton,ShuxinLin/peloton,yingjunwu/peloton,yingjunwu/peloton,seojungmin/peloton,apavlo/peloton,vittvolt/peloton,cmu-db/peloton,apavlo/peloton,vittvolt/peloton,ShuxinLin/peloton,ShuxinLin/peloton,PauloAmora/peloton,haojin2/peloton,prashasthip/peloton,AllisonWang/peloton,PauloAmora/peloton,seojungmin/peloton,AllisonWang/peloton,haojin2/peloton,PauloAmora/peloton,prashasthip/peloton