How to delete a fail2ban IP from the iptables chain of rules

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root@myserver:~# nano /usr/local/sbin/deleteipfromfail2ban.sh
#!/bin/bash

IP=$1

if [ "$IP" = "" ] ; then
echo "Syntax: deleteipfromfail2ban.sh "
RETURNSTATUS=1
exit $RETURNSTATUS
fi

iptables -D fail2ban-ssh -s $IP -j DROP

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Example of usage:
deleteipfromfail2ban.sh 10.1.1.25