If you want to get rid of the coolant passages, just cut them off and JB weld them shut. They don't actually go IN the TB, they just heat it near the throttle plate. Reroute the coolant hoses and you're golden.
Chances are, you're still on the stock manifold, which means you should retain the coolant hoses going to the ISC (Idle Speed Control).
Coolant flows from the nipple on the lower intake manifold, up through the ISC (Idle Speed Control), then over and through the TB, and back in through a small hard pipe connected to the large coolant hard pipes that wrap around the block.
What you need to do is remove the feed and return hoses from the TB, grab a length of hose from your local auto parts store, and go straight from the return side of the ISC to the small steel hardline, thus completely bypassing the TB.
Make sure you use new hose clamps if the old ones aren't in good shape. Use the following diagram for reference: