There are quite a few doom bands with no "romantic" or gothic elements. Khanate being a prime example. The last Deinonychus album is brilliant. Sketicism and Thergothon have been mentioned already. Bethlehem, Zaraza, Bunkur, Winter, Dolorian, Esoteric and Halo as well.
Many traditional doom bands will not use violin or female vocals or whatever it is you label as gothic: Candlemass, Orodruin, Reverend Bizarre, St. Vitus, Penance, Electric Wizard, Sleep and so on.