Must use useAppsInMaintenance from cozy-client

[todo]

cozy-banks/src/hooks/useAppsInMaintenance.js

Lines 4 to 9 in 0bf9e1b

	// TODO Must use useAppsInMaintenance from cozy-client
	// https://github.com/cozy/cozy-client/pull/924
	const useAppsInMaintenance = client => {
	const [appsInMaintenance, setAppsInMaintenance] = useState([])
	useEffect(() => {

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This issue was generated by todo based on a TODO comment in 0bf9e1b when #2070 was merged. cc @cozy.