metrocode is marked as deprecated in documentation

Author: Andra Mircioiu

content/geoip/docs/web-services/legacy.md

@@ -176,8 +176,8 @@ encoding is also referred to as latin1.
         <td>Metro code</td>
         <td>integer</td>
         <td>
-          The metro code associated with the IP address. These are only
-          available for IP addresses in the US.
+          **Deprecated**. This is a no-longer-maintained code for targeting 
+          advertisements in Google.
         </td>
         <td></td>
         <td></td>

content/geoip/docs/web-services/responses.md

@@ -388,7 +388,7 @@ address.
   {{</ geoip-schema-row >}}
 
   {{< geoip-schema-row key="metro_code" valueType="integer" city="true" insights="true">}}
-  Metro code is a geolocation target code from Google.
+  **Deprecated**. This is a no-longer-maintained code for targeting advertisements in Google.
   {{</ geoip-schema-row >}}
 
   {{< geoip-schema-row key="population_density" valueType="integer" insights="true">}}

layouts/shortcodes/csv-location-table.html

@@ -306,7 +306,8 @@
         <td>metro_code</td>
         <td>integer</td>
         <td>
-          Metro code is a geolocation target code from Google.
+          **Deprecated**. This is a no-longer-maintained code for targeting 
+          advertisements in Google.
         </td>
         {{ if eq $isEnterprise "false" }}
           <td>