Snowbridge: Remove unused storage and perform some refactoring#19

yrong merged 3 commits intoremove-asset-location-checkyrong/polkadot-sdk:remove-asset-location-checkfrom

remove-asset-location-check-with-versioned-locationyrong/polkadot-sdk:remove-asset-location-check-with-versioned-locationCopy head branch name to clipboard