do not disable zones plugin

Don't want to silently disable it, because then users with
active configuration would lose their notifications.

src/interfaces/plugins.ts

@@ -310,18 +310,16 @@ module.exports = (theApp: any) => {
   function startPlugins(app: any) {
     app.plugins = []
     app.pluginsMap = {}
-    modulesWithKeyword(app.config, 'signalk-node-server-plugin')
-      .filter(
-        (moduleData: any) => moduleData.metadata.name !== '@signalk/zones'
-      )
-      .forEach((moduleData: any) => {
+    modulesWithKeyword(app.config, 'signalk-node-server-plugin').forEach(
+      (moduleData: any) => {
         registerPlugin(
           app,
           moduleData.module,
           moduleData.metadata,
           moduleData.location
         )
-      })
+      }
+    )
   }
 
   function handleMessageWrapper(app: any, id: string) {