CircuitPython automatically mirrors the REPL on attached OLED

I ran into this weird problem when using an OLED display on a Pico RP2040 when I initialized the Adafruit SH1106 SPI OLED driver. Trash started scrolling up the screen. The screen was erased and worked fine when sending my own graphics to it.
I looked at the output and found out Adafruit automatically routes REPL output to any display added.
Blog: joe.blog.freemansoft.com/2023...
Video: A, maybe, better video • The Adafruit CircuitPy...

[@thomastempe3301]

So, how do you make that behavior go away?