delete old turbovisor file under root directory
delete old turbovisor file under root directory

ddysher/turbo,YuanPeir-Chen/turbo-support-mipsel,YuanPeir-Chen/turbo-support-mipsel,kernelsauce/turbo,zcsteele/turbo,zcsteele/turbo,luastoned/turbo,mniestroj/turbo,ddysher/turbo,luastoned/turbo