This patch removes `bpy_extras.object_utils.object_image_guess()` utility function.
- Functionality is extremely specific, it used only in one place 3D-Print add-on as export option (disabled by default).
- It was not been ported to Cycles or EEVEE, making it completely useless since 2.80 release.
For the above reasons I propose to remove it from `bpy_extras`.
3D-Print add-on will get replacement functionality (by me).
Do I need to clean up somewhere else? Like API docs?