Revert #225

[birchmd]

The balance_evm_and_nep_141 was called successfully in this transaction. You can see the balances are now restored from the following CLI output:

$ ./bin/near view aurora ft_total_eth_supply_on_aurora
View call: aurora.ft_total_eth_supply_on_aurora()
Log [aurora]: Total ETH supply on Aurora: 12752741701607000064610
1.2752741701607e+22

$ ./bin/near view aurora ft_balance_of '{"account_id" : "aurora"}'
View call: aurora.ft_balance_of({"account_id" : "aurora"})
Log [aurora]: Balance of nETH [aurora]: 12424204949453000064603
1.2424204949453e+22

$ ./lib/aurora.js --network testnet get-balance 0xe9217bc70b7ed1f598ddd3199e80b093fa71124f
55857632000000000007

$ ./lib/aurora.js --network testnet get-balance 0xb0bd02f6a392af548bdf1cfaee5dfa0eefcc8eab
272679120154000000000

$ python3 -c "(12424204949453000064603 + 55857632000000000007 + 272679120154000000000) == 12752741701607000064610"
True

Therefore, we can revert the changes made in #225