Updating the release notes (#221)

Author: Isaiah Williams

ChangeLog.md

@@ -25,7 +25,6 @@
 * Agreement
   * Added the [Get-PartnerAgreementStatus](https://docs.microsoft.com/powershell/module/partnercenter/Get-PartnerAgreementStatus) command to get the status of acceptance of the Microsoft Partner Agreement for the specified partner
 * Authentication
-  * Added the `AzureAccessToken` parameter to the [Connect-PartnerCenter](https://docs.microsoft.com/powershell/module/partnercenter/Connect-PartnerCenter) command, this value will be used to interact with Azure when using commands that leverage the Azure Resource Manager API
   * Updated how [Connect-PartnerCenter](https://docs.microsoft.com/powershell/module/partnercenter/Connect-PartnerCenter) writes warnings during an authentication attempt
   * Updated how [New-PartnerAccessToken](https://docs.microsoft.com/powershell/module/partnercenter/New-PartnerAccessToken) prompts for interaction
   * When using [Connect-PartnerCenter](https://docs.microsoft.com/powershell/module/partnercenter/Connect-PartnerCenter) with an access token the account and tenant information are now extracted from the access token