Remove old `Indicators` widget #1184

Job	Run time
Test	1m 5s
deploy-blueos-extension	1m 1s
deploy-flatpak	7m 44s
deploy-page	39s
deploy-electron (macos-latest, macos, dmg)	4m 27s
deploy-electron (ubuntu-latest, linux, AppImage)	3m 47s
	18m 43s

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