make user listing return non-private fields

this was from a time when normal users could install apps

src/users.js

@@ -2,7 +2,6 @@
 
 exports = module.exports = {
     removePrivateFields,
-    removeRestrictedFields,
 
     add,
     createOwner,
@@ -172,11 +171,6 @@ function removePrivateFields(user) {
     return result;
 }
 
-// remove all fields that Non-privileged users must not see
-function removeRestrictedFields(user) {
-    return _.pick(user, 'id', 'username', 'email', 'displayName', 'active');
-}
-
 async function add(email, data, auditSource) {
     assert.strictEqual(typeof email, 'string');
     assert(data && typeof data === 'object');