This reduces the size of ZIP downloads for offline reading.
Unused images were found by running `_tools/list-unused-images.sh`.
These images were used in Godot 2.x and 3.x documentation,
but have been replaced by remade images with different names since.
One-click deploy used to show an Android icon, when available.
Nowadays, remote debug (aka one-click deploy) for web and Android
found under the same submenu in the top right buttons.
Show the new icon with the submenu open instead.
Image has been lightly edited from a 4.0.X screenshot to avoid
distracting elements. New image sent in .webp format.
No other references to the old image found on docs.
Fixes#7226
* Add note about disabling Gatekeeper to Running on macOS article
* Apply suggestions from code review
Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>