Revert "[SNMP][IPv6]: Fix to use link local IPv6 address as snmp agentAddress (sonic-net#16013) (sonic-net#16102)"

This reverts commit 628e1ad.

Author: SuvarnaMeenakshi

dockers/docker-snmp/snmpd.conf.j2

@@ -30,27 +30,16 @@ agentAddress {{ protocol(agentip) }}:[{{ agentip }}]{% if port %}:{{ port }}{% e
 {% endfor %}
 {% elif NAMESPACE_COUNT is not defined or NAMESPACE_COUNT|int <= 1 %}
 {% if MGMT_INTERFACE is defined %}
-{% for intf, ip in MGMT_INTERFACE %}
-{% set agentip = ip.split('/')[0]|lower %}
-{% set zoneid = '' %}
-# Use interface as zoneid for link local ipv6
-{% if agentip.startswith('fe80') %}
-{% set zoneid = '%' + intf %}
-{% endif %}
-agentAddress {{ protocol(agentip) }}:[{{ agentip }}{{ zoneid }}]:161
+{% for if, ip in MGMT_INTERFACE %}
+{% set agentip = ip.split('/')[0] %}
+agentAddress {{ protocol(agentip) }}:[{{ agentip }}]:161
 {% endfor %}
 {% endif %}
 {% if LOOPBACK_INTERFACE is defined %}
 {% for lo in LOOPBACK_INTERFACE %}
 {% if lo | length == 2 %}
-{% set intf = lo[0] %}
-{% set agentip = lo[1].split('/')[0]|lower %}
-{% set zoneid = '' %}
-# Use interface as zoneid for link local ipv6
-{% if agentip.startswith('fe80') %}
-{% set zoneid = '%' + intf %}
-{% endif %}
-agentAddress {{ protocol(agentip) }}:[{{ agentip }}{{ zoneid }}]:161
+{% set agentip = lo[1].split('/')[0] %}
+agentAddress {{ protocol(agentip) }}:[{{ agentip }}]:161
 {% endif %}
 {% endfor %}
 {% endif %}