chore: remove all from non- init files #476

Job	Run time
client-generation	3m 28s
Build wheels	1m 7s
Unit test - ./extensions/gubbins/gubbins-core	1m 36s
Unit test - ./extensions/gubbins/gubbins-db	1m 47s
Unit test - ./extensions/gubbins/gubbins-logic	1m 39s
Unit test - ./extensions/gubbins/gubbins-routers	2m 11s
Unit test - ./extensions/gubbins/gubbins-client	1m 43s
Unit test - ./extensions/gubbins/gubbins-cli	1m 38s
build-image	2m 29s
pytest-integration	14m 38s
	32m 16s

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