Missed one.

Author: katshann-raspberry

documentation/asciidoc/computers/legacy_config_txt/boot.adoc

@@ -29,12 +29,6 @@ WARNING: This setting is deprecated. Use `arm_64bit` instead to enable 64-bit ke
 
 Sets board-specific control bits.
 
-=== `armstub`
-
-`armstub` is the filename on the boot partition from which to load the ARM stub. The default ARM stub is stored in firmware and is selected automatically based on the Raspberry Pi model and various settings.
-
-The stub is a small piece of ARM code that is run before the kernel. Its job is to set up low-level hardware like the interrupt controller before passing control to the kernel.
-
 === `arm_peri_high`
 
 Set `arm_peri_high` to `1` to enable high peripheral mode on Raspberry Pi 4. It is set automatically if a suitable DTB is loaded.