Removed unused using statement.
Removed unused using statement.

oceanho/aspnetboilerplate,lvjunlei/aspnetboilerplate,nineconsult/Kickoff2016Net,daywrite/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate,chenkaibin/aspnetboilerplate,virtualcca/aspnetboilerplate,MDSNet2016/aspnetboilerplate,AlexGeller/aspnetboilerplate,MDSNet2016/aspnetboilerplate,chenkaibin/aspnetboilerplate,andmattia/aspnetboilerplate,4nonym0us/aspnetboilerplate,ilyhacker/aspnetboilerplate,AlexGeller/aspnetboilerplate,berdankoca/aspnetboilerplate,Nongzhsh/aspnetboilerplate,ShiningRush/aspnetboilerplate,beratcarsi/aspnetboilerplate,carldai0106/aspnetboilerplate,Nongzhsh/aspnetboilerplate,virtualcca/aspnetboilerplate,luchaoshuai/aspnetboilerplate,ShiningRush/aspnetboilerplate,Tobyee/aspnetboilerplate,690486439/aspnetboilerplate,zquans/aspnetboilerplate,ryancyq/aspnetboilerplate,s-takatsu/aspnetboilerplate,ShiningRush/aspnetboilerplate,chendong152/aspnetboilerplate,lemestrez/aspnetboilerplate,abdllhbyrktr/aspnetboilerplate,ryancyq/aspnetboilerplate,yuzukwok/aspnetboilerplate,jaq316/aspnetboilerplate,ddNils/aspnetboilerplate,fengyeju/aspnetboilerplate,berdankoca/aspnetboilerplate,690486439/aspnetboilerplate,lvjunlei/aspnetboilerplate,jaq316/aspnetboilerplate,SXTSOFT/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate,zclmoon/aspnetboilerplate,ryancyq/aspnetboilerplate,abdllhbyrktr/aspnetboilerplate,Tobyee/aspnetboilerplate,ryancyq/aspnetboilerplate,zclmoon/aspnetboilerplate,lemestrez/aspnetboilerplate,zquans/aspnetboilerplate,4nonym0us/aspnetboilerplate,abdllhbyrktr/aspnetboilerplate,lemestrez/aspnetboilerplate,lvjunlei/aspnetboilerplate,AndHuang/aspnetboilerplate,fengyeju/aspnetboilerplate,verdentk/aspnetboilerplate,chendong152/aspnetboilerplate,daywrite/aspnetboilerplate,jaq316/aspnetboilerplate,4nonym0us/aspnetboilerplate,beratcarsi/aspnetboilerplate,carldai0106/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate,oceanho/aspnetboilerplate,beratcarsi/aspnetboilerplate,andmattia/aspnetboilerplate,AndHuang/aspnetboilerplate,verdentk/aspnetboilerplate,burakaydemir/aspnetboilerplate,carldai0106/aspnetboilerplate,fengyeju/aspnetboilerplate,690486439/aspnetboilerplate,ilyhacker/aspnetboilerplate,chenkaibin/aspnetboilerplate,nineconsult/Kickoff2016Net,s-takatsu/aspnetboilerplate,yuzukwok/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate,Nongzhsh/aspnetboilerplate,Tobyee/aspnetboilerplate,ZhaoRd/aspnetboilerplate,virtualcca/aspnetboilerplate,oceanho/aspnetboilerplate,yhhno/aspnetboilerplate,andmattia/aspnetboilerplate,ZhaoRd/aspnetboilerplate,ilyhacker/aspnetboilerplate,luchaoshuai/aspnetboilerplate,s-takatsu/aspnetboilerplate,AndHuang/aspnetboilerplate,ddNils/aspnetboilerplate,ZhaoRd/aspnetboilerplate,daywrite/aspnetboilerplate,yhhno/aspnetboilerplate,berdankoca/aspnetboilerplate,AlexGeller/aspnetboilerplate,SXTSOFT/aspnetboilerplate,ddNils/aspnetboilerplate,yuzukwok/aspnetboilerplate,carldai0106/aspnetboilerplate,zclmoon/aspnetboilerplate,SXTSOFT/aspnetboilerplate,verdentk/aspnetboilerplate,burakaydemir/aspnetboilerplate,zquans/aspnetboilerplate