remove extra unneeded param

slapos/recipe/kvm/template/kvm_run.in

@@ -59,7 +59,6 @@ if '%{is-packer}s':
 
 # XXX: give all of this through parameter, don't use this as template, but as module
 # use_tap and use_nat set as Bool as per http://stackoverflow.com/a/922374
-software_type = '%(kvm-software-type)s'
 qemu_img_path = '%(qemu-img-path)s'
 qemu_path = '%(qemu-path)s'
 disk_size = '%(disk-size)s'