Turn all keyboard shortcuts off

I am on a Mac using Chrome with a 1Password extension and need to turn off the keyboard shortcut ⌘-\. I need to use this shortcut in another tool that cannot be changed.
 

It doesn’t appear that there are any keyboard shortcuts set on my device:

But this popup shows every time I hit ⌘-\ on my keyboard:

Is there any way to remove the shortcut from my device? Or is this a global shortcut that cannot be removed?

Thanks!