2005 Silverado 5.3 swap

[tommymiller090106]

So I bought a 2005 5.3 out of a Silverado half ton with a 4l60e transmission got a good deal $1,500 130 thousand miles on it, my question is that on the stock intake manifold it has a return port to the fuel tank someone told me this was for vapors can I take this off, I have a Boyd thank with a 340 stealth pump in it any help would be appreciated thank you