Got rid of double projection set.

src/util/mongo.controller.js

@@ -40,8 +40,13 @@ const findOneResourceWithQuery = async (query, resourceType) => {
   return collection.findOne(query, { projection: { _id: 0 } });
 };
 
+/**
+ * Searches the database for the one or more resources based on a mongo query and returns the data.
+ * @param {Object} query the mongo query to use
+ * @param {string} resourceType type of desired resource, signifies collection resource is stored in
+ * @return {Array} the data of the found documents
+ */
 const findResourcesWithQuery = async (query, resourceType, options = { projection: { _id: 0 } }) => {
-  options.projection['_id'] = 0;
   const collection = db.collection(resourceType);
   const results = collection.find(query, options);
   return results.toArray();