fix: don't install litestream in rescue env

infrastructure/k8s_control_plane.tf

@@ -48,7 +48,6 @@ resource "hcloud_server" "control-plane" {
       "apt-get install -y gawk",
       "curl -fsSLO --retry-delay 1 --retry 60 --retry-connrefused --retry-max-time 60 --connect-timeout 20 https://raw.githubusercontent.com/flatcar/init/flatcar-master/bin/flatcar-install",
       "chmod +x flatcar-install",
-      "curl -L https://github.com/benbjohnson/litestream/releases/download/${var.litestream_version}/litestream-${var.litestream_version}-linux-arm64.tar.gz | tar -xvz -C /root",
       "./flatcar-install -s -i /root/ignition.json -C ${var.release_channel}",
       "reboot",
     ]