fix: delete headers instead of setting to null (#12)

When setting the headers to null they will later on be sent as "null" which messes the machine to machine auth.

Author: Ido Shamun

helm/values/prod.yaml.enc

@@ -46,8 +46,8 @@ app.use((ctx, next) => {
       service: true,
     };
   } else {
-    ctx.request.headers['user-id'] = null;
-    ctx.request.headers['logged-in'] = null;
+    delete ctx.request.headers['user-id'];
+    delete ctx.request.headers['logged-in'];
   }
   return next();
 });