The plastic globe is a vacum resevoir. For your ac/heat/defrost selection to work right you will need it as well as for your cruise control.
On my "resucued" Jeep, I removed it from the front bumper area and it now "lays" on the passenger side of the engine compartment. I have to replace my vacum lines more due to heat, but they are short runs and easy to get to now.
Good Luck.