removed duplicate manager metadata

Author: KCCross

SkypeForBusiness/SkypeServer/server-sign-in/unable-to-sign-in-to-sfb.md

@@ -5,7 +5,6 @@ author: cloud-writer
 ms.author: meerak
 manager: dcscontentpm
 ms.reviewer: simonjx, corbinm, v-kccross
-manager: dcscontentpm
 audience: Admin
 search.appverid: 
   - MET150