vacuume nipple

[cje32303]

I have a new to me 1991 tracker with a 1.6 8v engine. I was in the process of replacing some of the vacuum hoses when I noticed the nipple on the intake was about 3/4 clogged. Its the one located between the tps and the head on the intake. The hose goes to the bottom of the throttle opener valve. I first tried card spray and compressed air with no luck. Next I took a small pick and it seamed pretty solid. Is this like this from the factory or do I need to try to drill this out.

Thanks Jason