Fix cleaning when there are no .pyc files
Fix cleaning when there are no .pyc files

abaldwin1/thumbor,food52/thumbor,Jimdo/thumbor,okor/thumbor,figarocms/thumbor,gselva/thumbor,raphaelfruneaux/thumbor,camargoanderso/thumbor,voxmedia/thumbor,aaxx/thumbor,grevutiu-gabriel/thumbor,suwaji/thumbor,adeboisanger/thumbor,BetterCollective/thumbor,BetterCollective/thumbor,raphaelfruneaux/thumbor,camargoanderso/thumbor,camargoanderso/thumbor,felipemorais/thumbor,adeboisanger/thumbor,felipemorais/thumbor,voxmedia/thumbor,kkopachev/thumbor,figarocms/thumbor,davduran/thumbor,suwaji/thumbor,grevutiu-gabriel/thumbor,gi11es/thumbor,lfalcao/thumbor,scorphus/thumbor,wking/thumbor,figarocms/thumbor,thumbor/thumbor,davduran/thumbor,davduran/thumbor,gi11es/thumbor,jdunaravich/thumbor,aaxx/thumbor,Bladrak/thumbor,okor/thumbor,food52/thumbor,felipemorais/thumbor,camargoanderso/thumbor,felipemorais/thumbor,jiangzhonghui/thumbor,marcelometal/thumbor,dhardy92/thumbor,dhardy92/thumbor,wking/thumbor,thumbor/thumbor,gi11es/thumbor,fanhero/thumbor,scorphus/thumbor,thumbor/thumbor,voxmedia/thumbor,aaxx/thumbor,jdunaravich/thumbor,fanhero/thumbor,suwaji/thumbor,scorphus/thumbor,suwaji/thumbor,abaldwin1/thumbor,jiangzhonghui/thumbor,figarocms/thumbor,MaTriXy/thumbor,lfalcao/thumbor,marcelometal/thumbor,2947721120/thumbor,Jimdo/thumbor,gselva/thumbor,fanhero/thumbor,grevutiu-gabriel/thumbor,lfalcao/thumbor,aaxx/thumbor,Bladrak/thumbor,gselva/thumbor,jdunaravich/thumbor,dhardy92/thumbor,davduran/thumbor,marcelometal/thumbor,raphaelfruneaux/thumbor,lfalcao/thumbor,Jimdo/thumbor,food52/thumbor,food52/thumbor,grevutiu-gabriel/thumbor,MaTriXy/thumbor,adeboisanger/thumbor,abaldwin1/thumbor,2947721120/thumbor,2947721120/thumbor,MaTriXy/thumbor,okor/thumbor,thumbor/thumbor,MaTriXy/thumbor,kkopachev/thumbor,scorphus/thumbor,wking/thumbor,abaldwin1/thumbor,jiangzhonghui/thumbor,gselva/thumbor,raphaelfruneaux/thumbor,Jimdo/thumbor,jiangzhonghui/thumbor,adeboisanger/thumbor,kkopachev/thumbor,BetterCollective/thumbor,jdunaravich/thumbor,fanhero/thumbor,2947721120/thumbor,wking/thumbor,kkopachev/thumbor