Update Set-CsExternalAccessPolicy.md to remove preview notes

Removed note about parameters being in Public Preview.

Author: krammerliu

teams/teams-ps/MicrosoftTeams/Set-CsExternalAccessPolicy.md

@@ -154,9 +154,6 @@ In this example, we create an ExternalAccessPolicy named "GranularFederationExam
 
 > Applicable: Lync Server 2010, Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
 
-> [!NOTE]
-> Please note that this parameter is in Public Preview.
-
 Specifies the external domains allowed to communicate with users assigned to this policy. This setting is applicable only when `CommunicationWithExternalOrgs` is configured to `AllowSpecificExternalDomains`. This setting can be modified only in custom policy. In Global (default) policy `CommunicationWithExternalOrgs` can only be set to `OrganizationDefault` and cannot be changed.
 ```yaml
 Type: List
@@ -174,9 +171,6 @@ Accept wildcard characters: False
 
 > Applicable: Lync Server 2010, Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
 
-> [!NOTE]
-> Please note that this parameter is in Public Preview.
-
 Specifies the external domains blocked from communicating with users assigned to this policy. This setting is applicable only when `CommunicationWithExternalOrgs` is configured to `BlockSpecificExternalDomains`. This setting can be modified only in custom policy. In Global (default) policy `CommunicationWithExternalOrgs` can only be set to `OrganizationDefault` and cannot be changed.
 ```yaml
 Type: List
@@ -194,9 +188,6 @@ Accept wildcard characters: False
 
 > Applicable: Lync Server 2010, Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
 
-> [!NOTE]
-> Please note that this parameter is in Public Preview.
-
 Indicates how the users get assigned by this policy can communicate with the external orgs. There are 5 options:
 
 - OrganizationDefault: users follow the federation settings specified in `TenantFederationConfiguration`. This is the default value.