update '_remove' method

#365 better support for shard cluster

lib/service.js

@@ -304,14 +304,17 @@ class Service extends AdapterService {
     if (id !== null) {
       query.$and = (query.$and || []).concat({ [this.id]: id });
 
-      return this.Model.findOneAndDelete(query, params.mongoose).lean(this.lean)
-        .exec().then(result => {
+      return this.Model.findById(id)
+        .then((result) => {
           if (result === null) {
             throw new errors.NotFound(`No record found for id '${id}'`, query);
           }
-
-          return result;
-        }).then(select(params, this.id)).catch(errorHandler);
+          return this.Model.deleteOne(query, params.mongoose).lean(this.lean)
+            .exec()
+            .then(() => result)
+            .then(select(params, this.id));
+        })
+        .catch(errorHandler);
     }
 
     const findParams = Object.assign({}, params, {