I’m just guessing that was designed to only release fumes when pressure is enough to open it, so removing it will likely result in fumes in your garage constantly.

1957 Chevy 3200
Daily Driver
PS, A/C, Tilt column, Rebuilt 350, Rebuilt TH350, Reupholstered Bench Seat, sound proof/insulated, LED headlights/taillights/backup lights/interior courtesy lights.
Follow in the DITY