Remove workaround for crashing analyzer in globalconfig (#44941)

.globalconfig

@@ -4,11 +4,6 @@ is_global = true
 # https://github.com/dotnet/aspnetcore/pull/30111#issuecomment-777817003
 dotnet_diagnostic.CA1309.severity = suggestion
 
-# CA3076: Insecure XSLT Script Execution
-# Disabled due to crashing: https://github.com/dotnet/roslyn-analyzers/issues/4750
-# Delete the following line when we have a working version.
-dotnet_diagnostic.CA3076.severity = none
-
 # CA1304: Specify CultureInfo
 dotnet_diagnostic.CA1304.severity = error