Removed sfb 2019

Removed sfb 2019 as Persistent Chat feature is not present in this version

Author: get-itips

skype/skype-ps/skype/Get-CsPersistentChatCategory.md

@@ -1,6 +1,6 @@
 ---
 external help file: Microsoft.Rtc.Management.dll-help.xml
-applicable: Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
+applicable: Lync Server 2013, Skype for Business Server 2015
 title: Get-CsPersistentChatCategory
 schema: 2.0.0
 ---
@@ -89,7 +89,7 @@ The Identity consists of the Persistent Chat pool were the category is located f
 Type: String
 Parameter Sets: Identity
 Aliases: 
-Applicable: Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
+Applicable: Lync Server 2013, Skype for Business Server 2015
 
 Required: True
 Position: 1
@@ -106,7 +106,7 @@ When not specified, SIP addresses are used when showing these users.
 Type: SwitchParameter
 Parameter Sets: (All)
 Aliases: 
-Applicable: Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
+Applicable: Lync Server 2013, Skype for Business Server 2015
 
 Required: False
 Position: Named
@@ -124,7 +124,7 @@ If you leave off both the Name and PoolFqdn parameters, then information will be
 Type: String
 Parameter Sets: Pool
 Aliases: 
-Applicable: Lync Server 2013, Skype for Business Server 2015, Skype for Business Server 2019
+Applicable: Lync Server 2013, Skype for Business Server 2015
 
 Required: False
 Position: Named