Remove check connectivity test for prerequisite script (#648)

Co-authored-by: pablomendezroyo <41727368+pablomendezroyo@users.noreply.github.com>

Author: 3alpha

scripts/dappnode_install_pre.sh

@@ -147,12 +147,6 @@ else
     install_lsof 2>&1 | tee -a $LOG_FILE
 fi
 
-#Check connectivity
-{ [ -f /etc/network/interfaces ] && grep "iface en.* inet dhcp" /etc/network/interfaces &>/dev/null; } || {
-    echo "Interfaces not found"
-    exit 1
-}
-
 ## Add missing interfaces
 if [ -f /usr/src/dappnode/hotplug ]; then
     # shellcheck disable=SC2013