Creating a player creates automatically a new user

[jborozco]

Description

When I add a player, it also creates a platform user.

Environment

1. OS (where OpenBAS server runs): { e.g. Mac OS 10, Windows 10, Ubuntu 16.4, etc. }
2. OpenBAS version: { e.g. OpenBAS 1.0.2 }
3. OpenBAS client: { e.g. frontend or python }
4. Other environment details:

Reproducible Steps

create a new player here https://testing.obas.staging.filigran.io/admin/teams/players
search for the new player created here https://testing.obas.staging.filigran.io/admin/settings/security/users

Expected Output

the player should not have a user account, with SSO identification this behavior can become a problem