removed `pallet::getter` usage from cumulus pallets (#3471)
Part of #3326 @ggwpez @Kianenigma @shawntabrizi polkadot address: 12poSUQPtcF1HUPQGY3zZu2P8emuW9YnsPduA4XG3oCEfJVp --------- Signed-off-by:Matteo Muraca <mmuraca247@gmail.com>
Part of #3326 @ggwpez @Kianenigma @shawntabrizi polkadot address: 12poSUQPtcF1HUPQGY3zZu2P8emuW9YnsPduA4XG3oCEfJVp --------- Signed-off-by:Matteo Muraca <mmuraca247@gmail.com>