scripts/network/juniper/security-policy-group.xml

<rpc>
<get-configuration>
<configuration>
<security>        
<policies>            
<policy %delete%>                
<from-zone-name>%from-zone%</from-zone-name>                
<to-zone-name>%to-zone%</to-zone-name>            
</policy>        
</policies>    
</security>
</configuration>
</get-configuration>
</rpc>