How Do I Unlink Platforms From My Epic Games Account from Rocket League?

We highly discourage disconnecting your platform from your Epic Games Account for these reasons:

• Your game progress is stored directly on your Primary Account. If you disconnect this Primary Account, other linked accounts won’t be able to access it any longer. 
• Once you disconnect, you won't be able to connect a different platform of the same type to the same Epic Games Account.
  Example: If you disconnect your Xbox account, you won't be able to add a different Xbox account to the same Epic Games Account.
• If you sign in to your Epic Games Account using a platform that was disconnected, you will automatically create a new Epic Games Account. This new account will not have any game progression.

If you still want to disconnect, follow these steps:

1. Verify your Email Address
2. Visit your Connected Accounts Page
3. Click on the Accounts Tab
4. Click the DISCONNECT button below the platform you want to disconnect

For more info, check out How Do I Link My Epic Games Account to a Platform for Rocket League?