[Fantom] Fix deployer and clean up

[boyuan-chen]

  203 passing (21m)
  7 pending
  36 failing

Known issues:

• BOBA API Tests (4 failure tests) - need a new gas price oracle key
• BOBA Fee Payment Tests (27 failure tests)
• eth_sendRawTransaction{tag:rpc} should reject a transaction with a too low gas limit or too low:
  • invalid transaction: insufficient funds for gas * price + value\
• Use secondary Fee Token (2 failure tests)
• {tag:other} should delete testInt slot storage:
  • AssertionError: Expected "5001999701070000000000" to be equal 5001999722516000000000

[trangtran-enya]

• After updating GasPriceOracle

  235 passing (28m)
  8 pending
  5 failing