Description:

Custom fields are required even when required: false is set.

Steps to reproduce:

1. Add a custom field that is not required
2. Try to save a user's information
   

Expected behavior:

Save without warning.

Actual behavior:

Server Setup Information:

• Version of Rocket.Chat Server: 3.3.0 (a987295)
• NodeJS Version: v12.14.1
• MongoDB Version: 3.6.18 mmapv1

Client Setup Information

• Desktop App or Browser Version: 2.17.7
• Operating System: Windows 10