[dhcp_relay] Remove wait LLA in wati_for_intf.sh in dhcp_relay container

dockers/docker-dhcp-relay/wait_for_intf.sh.j2

@@ -21,25 +21,6 @@ function wait_until_iface_ready
     echo "Interface ${IFACE_NAME} is ready!"
 }
 
-function check_for_ipv6_link_local
-{
-    IFACE_NAME=$1
-    echo "Waiting until interface ${IFACE_NAME} has a link-local ipv6 address configured...."
-
-    # Status of link local address is not populated in STATE_DB
-    while true; do
-        HAS_LL=$(ip -6 addr show ${IFACE_NAME} scope link 2> /dev/null)
-        RC=$?
-        if [[ ${RC} == "0" ]] && [[ ! -z ${HAS_LL} ]]; then
-            break
-        fi
-
-        sleep 1
-    done
-
-    echo "Link-Local address is configured on ${IFACE_NAME}"
-}
-
 # Wait for all interfaces with IPv4 addresses to be up and ready
 # dhcp6relay binds to ipv6 addresses configured on these vlan ifaces
 # Thus check if they are ready before launching dhcp6relay
@@ -55,7 +36,6 @@ wait_until_iface_ready {{ name }} {{ prefix }}
 {% if prefix | ipv6 %}
 {% if DHCP_RELAY and name in DHCP_RELAY %}
 wait_until_iface_ready {{ name }} {{ prefix }}
-check_for_ipv6_link_local {{ name }}
 {% endif %}
 {% endif %}
 {% endfor %}