Remove old `Indicators` widget #1176

Job	Run time
Test	1m 25s
deploy-flatpak	8m 31s
deploy-electron (macos-latest, macos, dmg)	5m 23s
deploy-page	39s
deploy-blueos-extension	57s
deploy-electron (ubuntu-latest, linux, AppImage)	4m 28s
	21m 23s

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