No Migrator Code

The migrator code has been removed from the MasterChef contract.

Review the MasterChef contract on Github: https://github.com/polylion/polylion-contract/blob/main/contracts/MasterChef.sol

Or on MaticVigil: https://explorer-mainnet.maticvigil.com/address/0x00275072A952f7731d507dc5deC9Bcb27c13cfc3