Remove `SubController` #1382

Job	Run time
lint / run	1m 12s
docs / build	1m 22s
dist / build	54s
helm / Package and Push Helm Chart	9s
test (ubuntu-latest, 3.12) / run	1m 13s
test (ubuntu-latest, 3.13) / run	1m 22s
test (ubuntu-latest, dev) / run	1m 33s
test (ubuntu-latest, 3.11) / run	1m 3s
release	0s
pypi	0s
	8m 48s

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