That CMU single you posted looks about the size of the UCLA triple my D stayed in Freshman year :))
Anyway, I’m not sure what you could reasonably remove. You need a bed and a desk, somewhere to hang your clothes, and some drawers for clothes and sundries.
My freshman year at CMU in a triple, we “lofted” my bed on top of two dressers and put some bean bags underneath as a seating space. It’s hilarious looking back on it, thinking of how I vaulted in and out of bed 2x per day without a care in the world. Oh, and that triple I was in was definitely not 3x bigger than the single in the video!