Remove obsolete symbol publish args

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: mmitche

azure-pipelines-official.yml

@@ -149,8 +149,6 @@ extends:
                 -prepareMachine
                 /p:TeamName=$(_TeamName)
                 /p:DotNetFinalVersionKind=$(_ReleaseVersionKind)
-                /p:DotNetSymbolServerTokenMsdl=$(microsoft-symbol-server-pat)
-                /p:DotNetSymbolServerTokenSymWeb=$(symweb-symbol-server-pat)
                 /p:OfficialBuildId=$(BUILD.BUILDNUMBER)
                 /p:ProductsToBuild=$(_Products)
                 /p:Test=false