remove unused variable
remove unused variable

fixes #11

kamilZ/EasyAdminBundle,kamilZ/EasyAdminBundle,thomasbeaujean/EasyAdminBundle,OskarStark/EasyAdminBundle,yceruto/EasyAdminBundle,thomasbeaujean/EasyAdminBundle,OskarStark/EasyAdminBundle,gabiudrescu/EasyAdminBundle,peterkokot/EasyAdminBundle,OskarStark/EasyAdminBundle,ogizanagi/EasyAdminBundle,seydu/EasyAdminBundle,gabiudrescu/EasyAdminBundle,yceruto/EasyAdminBundle,yceruto/EasyAdminBundle,alexgt9/EasyAdminBundle,javiereguiluz/EasyAdminBundle,seydu/EasyAdminBundle,helios-ag/EasyAdminBundle,javiereguiluz/EasyAdminBundle,kamilZ/EasyAdminBundle,datagit/EasyAdminBundle,jverdeyen/EasyAdminBundle,ogizanagi/EasyAdminBundle,seydu/EasyAdminBundle,ogizanagi/EasyAdminBundle,datagit/EasyAdminBundle,alexgt9/EasyAdminBundle,ogizanagi/EasyAdminBundle,Seanmcn/EasyAdminBundle,gabiudrescu/EasyAdminBundle,alexgt9/EasyAdminBundle,npotier/EasyAdminBundle,npotier/EasyAdminBundle,datagit/EasyAdminBundle,thomasbeaujean/EasyAdminBundle