I've looked and looked and can not find an answer. Is this a coolant line and are people known to relocate this or hide/tuck it away?

What line is this? (06+)

 

Yes, it's a coolant line to warm up your throttle body for colder weather and to prevent sticking. You don't have a IACV (idle air control valve) like the pre-drive by wire cars but that did remain.

 

Many bypass this tb heating since they rarely drive in sub 0F temps where intake icing could be a possible issue.

You buy a metal hose splice. Remove the in and out rubber hoses from TB, and connect them together. Cap the open ends on TB. A small amount of antifreeze will drip out during this process.