remove unnecessary idea file
remove unnecessary idea file

nanpa83/ngrinder,chengaomin/ngrinder,songeunwoo/ngrinder,chengaomin/ngrinder,GwonGisoo/ngrinder,bwahn/ngrinder,songeunwoo/ngrinder,chengaomin/ngrinder,songeunwoo/ngrinder,naver/ngrinder,ropik/ngrinder,nanpa83/ngrinder,chengaomin/ngrinder,bwahn/ngrinder,nanpa83/ngrinder,naver/ngrinder,GwonGisoo/ngrinder,GwonGisoo/ngrinder,chengaomin/ngrinder,naver/ngrinder,ropik/ngrinder,SRCB-CloudPart/ngrinder,naver/ngrinder,SRCB-CloudPart/ngrinder,ropik/ngrinder,naver/ngrinder,GwonGisoo/ngrinder,bwahn/ngrinder,ropik/ngrinder,SRCB-CloudPart/ngrinder,songeunwoo/ngrinder,bwahn/ngrinder,GwonGisoo/ngrinder,SRCB-CloudPart/ngrinder,songeunwoo/ngrinder,bwahn/ngrinder,nanpa83/ngrinder,SRCB-CloudPart/ngrinder,nanpa83/ngrinder