Deleted figures which are still referenced in user guide
@claudep
Submitted by Claude Paroz Link to original bug (#724408)
Description
Commits https://git.gnome.org/browse/empathy/commit/help/C/figures?id=a599028bba6dba2b9b0f4cc97b6d1879b364ba5f and https://git.gnome.org/browse/empathy/commit/help/C/figures?id=65d8bef73f2ff7d2025e51fa87e9981c95ea9ad6 deleted help figures (camera-web.png and audio-input-microphone.png, however they are still referenced in the user guide (audio-video.page).