Fix _removeUserFromRole async version in tests

Author: StorytellerCZ

roles/roles_common_async.js

@@ -763,7 +763,7 @@ Object.assign(Roles, {
   /**
    * Remove one user from one role.
    *
-   * @method _removeUserFromRole
+   * @method _removeUserFromRoleAsync
    * @param {String} userId The user ID.
    * @param {String} roleName Name of the role to add the user to. The role have to exist.
    * @param {Object} options Options:

roles/tests/serverAsync.js

@@ -1484,7 +1484,7 @@ describe('roles async', async function () {
       inheritedRoles: [{ _id: 'admin' }]
     }])
 
-    Roles._removeUserFromRole(users.eve, 'admin', { scope: null })
+    await Roles._removeUserFromRoleAsync(users.eve, 'admin', { scope: null })
 
     const rolesForUser2 = await Roles.getRolesForUserAsync(users.eve, { anyScope: true, fullObjects: true })
     assert.sameDeepMembers(rolesForUser2.map(obj => { delete obj._id; return obj }), [])