lxd/daemon: Removes duplicated Stopping instances logging
lxd/daemon: Removes duplicated Stopping instances logging

Now done by instancesShutdown

Signed-off-by: Thomas Parrott <6b778ce645fb0e3dde76d79eccad490955b1ae74@canonical.com>

lxc/lxd,lxc/lxd,lxc/lxd,lxc/lxd,lxc/lxd,lxc/lxd,lxc/lxd