Remove obsolete modifier in Treasury contract

[andreiashu]

Description

The onlyEOA modifier is obsolete and can be removed:

review-xave-lending-market-2021-10/code/contracts/buyback/Treasury.sol

Lines 98 to 101 in 15d777b

	modifier onlyEOA() {
	require(msg.sender == tx.origin, 'Only EOA allowed');
	_;
	}