lxc-ubuntu.in: drop duplicate code

templates/lxc-ubuntu.in

@@ -175,34 +175,6 @@ download_ubuntu()
             return 1
     fi
 
-    echo "Installing updates"
-    if [ -z "$MIRROR" ]; then
-        MIRROR="http://archive.ubuntu.com/ubuntu"
-    fi
-    cat >> "$1/partial-${arch}/etc/apt/sources.list" << EOF
-deb $MIRROR ${release}-updates main universe
-deb http://security.ubuntu.com/ubuntu ${release}-security main universe
-EOF
-    chroot "$1/partial-${arch}" apt-get update
-    if [ $? -ne 0 ]; then
-        echo "Failed to update the apt cache"
-        return 1
-    fi
-    cat > "$1/partial-${arch}"/usr/sbin/policy-rc.d << EOF
-#!/bin/sh
-exit 101
-EOF
-    chmod +x "$1/partial-${arch}"/usr/sbin/policy-rc.d
-
-    chroot "$1/partial-${arch}" apt-get dist-upgrade -y
-    ret=$?
-
-    rm -f "$1/partial-${arch}"/usr/sbin/policy-rc.d
-    if [ $ret -ne 0 ]; then
-        echo "Failed to upgrade the cache"
-        return 1
-    fi
-
     # Serge isn't sure whether we should avoid doing this when
     # $release == `distro-info -d`
     echo "Installing updates"