how to empty A/C system

hello all. ive decided im going to remove everything A/C related from under the hood of my 81 Fairmont. the ac blows fairly cool, so im sure theres refrigerant in there, however the ac is useless to me above 25mph since the car is beyond uninsulated.
the tools i have access to include wrenches, screwdrivers, pliers, pry bar, and a hacksaw.
so with that list, what is going to be the safest way to "depressurize" (for lack of a better term) the system, before removal?

Take it to a local repair shop and tell them they can have your freon for FREE. LOL

Seriously though its the safest (enviormentally) and most cost effective way.

sooo...... hacksaw then?? seriously though , i am putting absolutely $0 into this car, so thats not really on the list of options

Do it right taking it to a shop to remove with the machine and the R12 will freeze your eyes losing your eyesight if done wrong.R12 is very expensive and most classic car restorers still have this pumped back in A/C systems instead of R134A

It is a violation of federal law in the US to knowingly vent freon into the air, last I heard it is a $10,000 fine.

Like The_Mechanic_33 said take it to a shop and tell them they can have it for free they will most likely take it and gladly thank you for it, R12 freon is no longer allowed to be manufactured in the US due to environmental laws, what is left of it is still allowed to be re-used as long as it is handled properly.