Remove xRUNE from vault , and upgrade router contract

Heimdallrequested to merge
1008-issue into develop

Related to #1008 (closed)

This PR has been updated to reflect the discussion in discord https://discord.com/channels/838986635756044328/839002619481554955/863183559400488981 Due to USDT issue , the network need to temporary send USDT to treasury , and once the contract updated , then it will be credit back to asgard vault

Edited by Heimdall

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