How do you set "Opens With" back to null or N/A for a single file?

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Current Events » How do you set "Opens With" back to null or N/A for a single file?
https://imgur.com/a/yyTXRtS

I need a memory jog for this one.
"Er...well, y'know. You can't make an omelette without um...destroying a forest.....or something" -Black Mage
There's somewhere in Settings > Apps where you can do it IIRC.

You can also use Open With again to change it to something else, but I don't think you can outright remove the setting via that.
Trumble 6800U - 16GB TRUMBLERAM - 1TB Trumble-State Drive - Trumble 680M GPU
Post #3 was unavailable or deleted.
I am there mobile, but it will not let me cancel out the ones I have selected.
"Er...well, y'know. You can't make an omelette without um...destroying a forest.....or something" -Black Mage
Post #5 was unavailable or deleted.
Current Events » How do you set "Opens With" back to null or N/A for a single file?