Drop some unused code

Author: mbuck-r7

lib/msf/core/db_manager/host.rb

@@ -157,8 +157,6 @@ def report_host(opts)
 
     if not addr.kind_of? ::Mdm::Host
       addr = normalize_host(addr)
-      # addr, scope = addr.split('%', 2)
-      # opts[:scope] = scope if scope
 
       unless ipv46_validator(addr)
         raise ::ArgumentError, "Invalid IP address in report_host(): #{addr}"